content_switches.cc revision 8bcbed890bc3ce4d7a057a8f32cab53fa534672e
1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "content/public/common/content_switches.h" 6 7namespace switches { 8 9// By default, file:// URIs cannot read other file:// URIs. This is an 10// override for developers who need the old behavior for testing. 11const char kAllowFileAccessFromFiles[] = "allow-file-access-from-files"; 12 13// Allows filters (SkImageFilter objects) to be sent between processes over IPC 14const char kAllowFiltersOverIPC[] = "allow-filters-over-ipc"; 15 16// Enables the sandboxed processes to run without a job object assigned to them. 17// This flag is required to allow Chrome to run in RemoteApps or Citrix. This 18// flag can reduce the security of the sandboxed processes and allow them to do 19// certain API calls like shut down Windows or access the clipboard. Also we 20// lose the chance to kill some processes until the outer job that owns them 21// finishes. 22const char kAllowNoSandboxJob[] = "allow-no-sandbox-job"; 23 24// Allows debugging of sandboxed processes (see zygote_main_linux.cc). 25const char kAllowSandboxDebugging[] = "allow-sandbox-debugging"; 26 27// Allow compositing on chrome:// pages. 28const char kAllowWebUICompositing[] = "allow-webui-compositing"; 29 30// The same as kAuditHandles except all handles are enumerated. 31const char kAuditAllHandles[] = "enable-handle-auditing-all"; 32 33// Enumerates and prints a child process' most dangerous handles when it 34// is terminated. 35const char kAuditHandles[] = "enable-handle-auditing"; 36 37// Blacklist the GPU for accelerated compositing. 38const char kBlacklistAcceleratedCompositing[] = 39 "blacklist-accelerated-compositing"; 40 41// Blacklist the GPU for WebGL. 42const char kBlacklistWebGL[] = "blacklist-webgl"; 43 44// Block cross-site documents (i.e., HTML/XML/JSON) from being loaded in 45// subresources when a document is not supposed to read them. This will later 46// allow us to block them from the entire renderer process when site isolation 47// is enabled. 48const char kBlockCrossSiteDocuments[] = "block-cross-site-documents"; 49 50// Causes the browser process to throw an assertion on startup. 51const char kBrowserAssertTest[] = "assert-test"; 52 53// Causes the browser process to crash on startup. 54const char kBrowserCrashTest[] = "crash-test"; 55 56// Path to the exe to run for the renderer and plugin subprocesses. 57const char kBrowserSubprocessPath[] = "browser-subprocess-path"; 58 59// Dumps extra logging about plugin loading to the log file. 60const char kDebugPluginLoading[] = "debug-plugin-loading"; 61 62// Sets the tile size used by composited layers. 63const char kDefaultTileWidth[] = "default-tile-width"; 64const char kDefaultTileHeight[] = "default-tile-height"; 65 66// Disable antialiasing on 2d canvas. 67const char kDisable2dCanvasAntialiasing[] = "disable-canvas-aa"; 68 69// Disables client-visible 3D APIs, in particular WebGL and Pepper 3D. 70// This is controlled by policy and is kept separate from the other 71// enable/disable switches to avoid accidentally regressing the policy 72// support for controlling access to these APIs. 73const char kDisable3DAPIs[] = "disable-3d-apis"; 74 75// Disable gpu-accelerated 2d canvas. 76const char kDisableAccelerated2dCanvas[] = "disable-accelerated-2d-canvas"; 77 78// Disables accelerated compositing. 79const char kDisableAcceleratedCompositing[] = "disable-accelerated-compositing"; 80 81// Disables accelerated compositing for backgrounds of root layers with 82// background-attachment: fixed. 83const char kDisableAcceleratedFixedRootBackground[] = 84 "disable-accelerated-fixed-root-background"; 85 86// Disables the hardware acceleration of 3D CSS and animation. 87const char kDisableAcceleratedLayers[] = "disable-accelerated-layers"; 88 89// Disables accelerated compositing for overflow scroll. 90const char kDisableAcceleratedOverflowScroll[] = 91 "disable-accelerated-overflow-scroll"; 92 93// Disable accelerated compositing for scrollable frames. 94const char kDisableAcceleratedScrollableFrames[] = 95 "disable-accelerated-scrollable-frames"; 96 97// Disables the hardware acceleration of plugins. 98const char kDisableAcceleratedPlugins[] = "disable-accelerated-plugins"; 99 100// Disables GPU accelerated video display. 101const char kDisableAcceleratedVideo[] = "disable-accelerated-video"; 102 103// Disables hardware acceleration of video decode, where available. 104const char kDisableAcceleratedVideoDecode[] = 105 "disable-accelerated-video-decode"; 106 107// Disables the alternate window station for the renderer. 108const char kDisableAltWinstation[] = "disable-winsta"; 109 110// Disable the ApplicationCache. 111const char kDisableApplicationCache[] = "disable-application-cache"; 112// 113// TODO(scherkus): remove --disable-audio when we have a proper fallback 114// mechanism. 115const char kDisableAudio[] = "disable-audio"; 116 117// Disable limits on the number of backing stores. Can prevent blinking for 118// users with many windows/tabs and lots of memory. 119const char kDisableBackingStoreLimit[] = "disable-backing-store-limit"; 120 121// Enables browser plugin compositing experiment. 122const char kDisableBrowserPluginCompositing[] = 123 "disable-browser-plugin-compositing"; 124 125// Disable accelerated scrolling by the compositor for frames. 126const char kDisableCompositedScrollingForFrames[] = 127 "disable-composited-scrolling-for-frames"; 128 129// See comment for kEnableCompositingForFixedPosition. 130const char kDisableCompositingForFixedPosition[] = 131 "disable-fixed-position-compositing"; 132 133// See comment for kEnableCompositingForTransition. 134const char kDisableCompositingForTransition[] = 135 "disable-transition-compositing"; 136 137// Disables HTML5 DB support. 138const char kDisableDatabases[] = "disable-databases"; 139 140// Disables the deadline scheduler. 141const char kDisableDeadlineScheduling[] = "disable-deadline-scheduling"; 142 143// Disables delegated renderer. 144const char kDisableDelegatedRenderer[] = "disable-delegated-renderer"; 145 146// Disables desktop notifications (default enabled on windows). 147const char kDisableDesktopNotifications[] = "disable-desktop-notifications"; 148 149// Disable device motion events. 150const char kDisableDeviceMotion[] = "disable-device-motion"; 151 152// Disable device orientation events. 153const char kDisableDeviceOrientation[] = "disable-device-orientation"; 154 155// Handles URL requests by NPAPI plugins through the renderer. 156const char kDisableDirectNPAPIRequests[] = "disable-direct-npapi-requests"; 157 158// Disable the per-domain blocking for 3D APIs after GPU reset. 159// This switch is intended only for tests. 160extern const char kDisableDomainBlockingFor3DAPIs[] = 161 "disable-domain-blocking-for-3d-apis"; 162 163// Disable experimental WebGL support. 164const char kDisableExperimentalWebGL[] = "disable-webgl"; 165 166// Disable FileSystem API. 167const char kDisableFileSystem[] = "disable-file-system"; 168 169const char kDisableFixedPositionCreatesStackingContext[] 170 = "disable-fixed-position-creates-stacking-context"; 171 172// Disable 3D inside of flapper. 173const char kDisableFlash3d[] = "disable-flash-3d"; 174 175// Disable Stage3D inside of flapper. 176const char kDisableFlashStage3d[] = "disable-flash-stage3d"; 177 178// This flag disables force compositing mode and prevents it from being enabled 179// via field trials. 180const char kDisableForceCompositingMode[] = "disable-force-compositing-mode"; 181 182// Disable the JavaScript Full Screen API. 183const char kDisableFullScreen[] = "disable-fullscreen"; 184 185// Suppresses support for the Geolocation javascript API. 186const char kDisableGeolocation[] = "disable-geolocation"; 187 188const char kDisableGestureTapHighlight[] = "disable-gesture-tap-highlight"; 189 190// Disable GL multisampling. 191const char kDisableGLMultisampling[] = "disable-gl-multisampling"; 192 193// Disables GPU hardware acceleration. If software renderer is not in place, 194// then the GPU process won't launch. 195const char kDisableGpu[] = "disable-gpu"; 196 197// Prevent the compositor from using its GPU implementation. 198const char kDisableGpuCompositing[] = "disable-gpu-compositing"; 199 200// Do not launch the GPU process shortly after browser process launch. Instead 201// launch it when it is first needed. 202const char kDisableGpuProcessPrelaunch[] = "disable-gpu-process-prelaunch"; 203 204// Disable the GPU process sandbox. 205const char kDisableGpuSandbox[] = "disable-gpu-sandbox"; 206 207// Disable the thread that crashes the GPU process if it stops responding to 208// messages. 209const char kDisableGpuWatchdog[] = "disable-gpu-watchdog"; 210 211// Suppresses hang monitor dialogs in renderer processes. This may allow slow 212// unload handlers on a page to prevent the tab from closing, but the Task 213// Manager can be used to terminate the offending process in this case. 214const char kDisableHangMonitor[] = "disable-hang-monitor"; 215 216// Disable the RenderThread's HistogramCustomizer. 217const char kDisableHistogramCustomizer[] = "disable-histogram-customizer"; 218 219// Disables HTML-based desktop notifications. 220const char kDisableHTMLNotifications[] = "disable-html-notifications"; 221 222// Disable the use of an ImageTransportSurface. This means the GPU process 223// will present the rendered page rather than the browser process. 224const char kDisableImageTransportSurface[] = "disable-image-transport-surface"; 225 226// Prevent Java from running. 227const char kDisableJava[] = "disable-java"; 228 229// Don't execute JavaScript (browser JS like the new tab page still runs). 230const char kDisableJavaScript[] = "disable-javascript"; 231 232// Disables prefixed Encrypted Media API (e.g. webkitGenerateKeyRequest()). 233const char kDisablePrefixedEncryptedMedia[] = 234 "disable-prefixed-encrypted-media"; 235 236// Disable LocalStorage. 237const char kDisableLocalStorage[] = "disable-local-storage"; 238 239// Force logging to be disabled. Logging is enabled by default in debug 240// builds. 241const char kDisableLogging[] = "disable-logging"; 242 243// Disable Pepper3D. 244const char kDisablePepper3d[] = "disable-pepper-3d"; 245 246// Disables compositor-accelerated touch-screen pinch gestures. 247const char kDisablePinch[] = "disable-pinch"; 248 249// Prevent plugins from running. 250const char kDisablePlugins[] = "disable-plugins"; 251 252// Disable discovering third-party plug-ins. Effectively loading only 253// ones shipped with the browser plus third-party ones as specified by 254// --extra-plugin-dir and --load-plugin switches. 255const char kDisablePluginsDiscovery[] = "disable-plugins-discovery"; 256 257// Disables remote web font support. SVG font should always work whether this 258// option is specified or not. 259const char kDisableRemoteFonts[] = "disable-remote-fonts"; 260 261// Turns off the accessibility in the renderer. 262const char kDisableRendererAccessibility[] = "disable-renderer-accessibility"; 263 264// Disable the seccomp filter sandbox (seccomp-bpf) (Linux only). 265const char kDisableSeccompFilterSandbox[] = "disable-seccomp-filter-sandbox"; 266 267// Disable session storage. 268const char kDisableSessionStorage[] = "disable-session-storage"; 269 270// Disable the setuid sandbox (Linux only). 271const char kDisableSetuidSandbox[] = "disable-setuid-sandbox"; 272 273// Enable shared workers. Functionality not yet complete. 274const char kDisableSharedWorkers[] = "disable-shared-workers"; 275 276// Disables site-specific tailoring to compatibility issues in WebKit. 277const char kDisableSiteSpecificQuirks[] = "disable-site-specific-quirks"; 278 279// Disable smooth scrolling for testing. 280const char kDisableSmoothScrolling[] = "disable-smooth-scrolling"; 281 282// Disables the use of a 3D software rasterizer. 283const char kDisableSoftwareRasterizer[] = "disable-software-rasterizer"; 284 285// Disables speech input. 286const char kDisableSpeechInput[] = "disable-speech-input"; 287 288// Disable False Start in SSL and TLS connections. 289const char kDisableSSLFalseStart[] = "disable-ssl-false-start"; 290 291// Disable multithreaded GPU compositing of web content. 292const char kDisableThreadedCompositing[] = "disable-threaded-compositing"; 293 294// Disables the threaded HTML parser in Blink 295const char kDisableThreadedHTMLParser[] = "disable-threaded-html-parser"; 296 297// Disable accelerated overflow scrolling in corner cases (that would not be 298// handled by enable-accelerated-overflow-scroll). 299const char kDisableUniversalAcceleratedOverflowScroll[] = 300 "disable-universal-accelerated-overflow-scroll"; 301 302// Disable web audio API. 303const char kDisableWebAudio[] = "disable-webaudio"; 304 305// Disables prefixed Media Source API (i.e., the WebKitMediaSource object). 306const char kDisableWebKitMediaSource[] = "disable-webkit-media-source"; 307 308// Disables unprefixed Media Source API (i.e., the MediaSource object). 309const char kDisableUnprefixedMediaSource[] = "disable-unprefixed-media-source"; 310 311// Don't enforce the same-origin policy. (Used by people testing their sites.) 312const char kDisableWebSecurity[] = "disable-web-security"; 313 314// Disables support for XSLT. 315const char kDisableXSLT[] = "disable-xslt"; 316 317// Disables Blink's XSSAuditor. The XSSAuditor mitigates reflective XSS. 318const char kDisableXSSAuditor[] = "disable-xss-auditor"; 319 320// Specifies if the |DOMAutomationController| needs to be bound in the 321// renderer. This binding happens on per-frame basis and hence can potentially 322// be a performance bottleneck. One should only enable it when automating dom 323// based tests. 324const char kDomAutomationController[] = "dom-automation"; 325 326// Enable gpu-accelerated SVG/W3C filters. 327const char kEnableAcceleratedFilters[] = "enable-accelerated-filters"; 328 329// Enables accelerated compositing for backgrounds of root layers with 330// background-attachment: fixed. Requires kForceCompositingMode. 331const char kEnableAcceleratedFixedRootBackground[] = 332 "enable-accelerated-fixed-root-background"; 333 334// Enables accelerated compositing for overflow scroll. Promotes eligible 335// overflow:scroll elements to layers to enable accelerated scrolling for them. 336const char kEnableAcceleratedOverflowScroll[] = 337 "enable-accelerated-overflow-scroll"; 338 339// Enables accelerated compositing for scrollable frames for accelerated 340// scrolling for them. Requires kForceCompositingMode. 341const char kEnableAcceleratedScrollableFrames[] = 342 "enable-accelerated-scrollable-frames"; 343 344// Turns on extremely verbose logging of accessibility events. 345const char kEnableAccessibilityLogging[] = "enable-accessibility-logging"; 346 347// Enable notifications of audible/silent audio output from a render view. 348// 349// TODO(miu): Remove --enable-audible-notifications once the feature goes 350// live. http://crbug.com/178934 351const char kEnableAudibleNotifications[] = "enable-audible-notifications"; 352 353// Use a begin frame signal from browser to renderer to schedule rendering. 354const char kEnableBeginFrameScheduling[] = "enable-begin-frame-scheduling"; 355 356// Enables browser plugin for all types of pages. 357const char kEnableBrowserPluginForAllViewTypes[] = 358 "enable-browser-plugin-for-all-view-types"; 359 360// Enables Drag and Drop into and out of Browser Plugin. 361// kEnableBrowserPluginGuestViews must also be set at this time. 362const char kEnableBrowserPluginDragDrop[] = "enable-browser-plugin-drag-drop"; 363 364// Enables accelerated scrolling by the compositor for frames. Requires 365// kForceCompositingMode and kEnableAcceleratedScrollableFrames. 366const char kEnableCompositedScrollingForFrames[] = 367 "enable-composited-scrolling-for-frames"; 368 369// Enable the creation of compositing layers for fixed position 370// elements. Three options are needed to support four possible scenarios: 371// 1. Default (disabled) 372// 2. Enabled always (to allow dogfooding) 373// 3. Disabled always (to give safety fallback for users) 374// 4. Enabled only if we detect a highDPI display 375// 376// Option #4 may soon be the default, because the feature is needed soon for 377// high DPI, but cannot be used (yet) for low DPI. Options #2 and #3 will 378// override Option #4. 379const char kEnableCompositingForFixedPosition[] = 380 "enable-fixed-position-compositing"; 381 382// Enable/Disable the creation of compositing layers for RenderLayers with a 383// transition on a property that supports accelerated animation (that is, 384// opacity, -webkit-transform, and -webkit-filter), even when no animation is 385// running. These options allow for three possible scenarios: 386// 1. Default (enabled only if we dectect a highDPI display) 387// 2. Enabled always. 388// 3. Disabled always. 389const char kEnableCompositingForTransition[] = 390 "enable-transition-compositing"; 391 392// Defer image decoding in WebKit until painting. 393const char kEnableDeferredImageDecoding[] = "enable-deferred-image-decoding"; 394 395// Enables the deadline scheduler. 396const char kEnableDeadlineScheduling[] = "enable-deadline-scheduling"; 397 398// Enables delegated renderer. 399const char kEnableDelegatedRenderer[] = "enable-delegated-renderer"; 400 401// Enables restarting interrupted downloads. 402const char kEnableDownloadResumption[] = "enable-download-resumption"; 403 404// Enables support for Encrypted Media Extensions (e.g. MediaKeys). 405const char kEnableEncryptedMedia[] = "enable-encrypted-media"; 406 407// Enable experimental canvas features, e.g. canvas 2D context attributes 408const char kEnableExperimentalCanvasFeatures[] = 409 "enable-experimental-canvas-features"; 410 411// Enables Web Platform features that are in development. 412const char kEnableExperimentalWebPlatformFeatures[] = 413 "enable-experimental-web-platform-features"; 414 415// Enable an experimental WebSocket implementation. 416const char kEnableExperimentalWebSocket[] = "enable-experimental-websocket"; 417 418// Enable the fast text autosizing implementation. 419const char kEnableFastTextAutosizing[] = "enable-fast-text-autosizing"; 420 421// By default, a page is laid out to fill the entire width of the window. 422// This flag fixes the layout of the page to a default of 980 CSS pixels, 423// or to a specified width and height using --enable-fixed-layout=w,h 424const char kEnableFixedLayout[] = "enable-fixed-layout"; 425 426const char kEnableFixedPositionCreatesStackingContext[] 427 = "enable-fixed-position-creates-stacking-context"; 428 429// Enable Gesture Tap Highlight 430const char kEnableGestureTapHighlight[] = "enable-gesture-tap-highlight"; 431 432// Enables the GPU benchmarking extension 433const char kEnableGpuBenchmarking[] = "enable-gpu-benchmarking"; 434 435// Enables TRACE for GL calls in the renderer. 436const char kEnableGpuClientTracing[] = "enable-gpu-client-tracing"; 437 438// See comment for kEnableCompositingForFixedPosition. 439const char kEnableHighDpiCompositingForFixedPosition[] = 440 "enable-high-dpi-fixed-position-compositing"; 441 442#if defined(OS_WIN) 443// Use high resolution timers for TimeTicks. 444const char kEnableHighResolutionTime[] = "enable-high-resolution-time"; 445#endif 446 447// Enable HTML Imports 448extern const char kEnableHTMLImports[] = "enable-html-imports"; 449 450// Enables support for inband text tracks in media content. 451const char kEnableInbandTextTracks[] = "enable-inband-text-tracks"; 452 453// Enable inputmode attribute of HTML input or text element. 454extern const char kEnableInputModeAttribute[] = "enable-input-mode-attribute"; 455 456// Force logging to be enabled. Logging is disabled by default in release 457// builds. 458const char kEnableLogging[] = "enable-logging"; 459 460// Enables the memory benchmarking extension 461const char kEnableMemoryBenchmarking[] = "enable-memory-benchmarking"; 462 463// On Windows, converts the page to the currently-installed monitor profile. 464// This does NOT enable color management for images. The source is still 465// assumed to be sRGB. 466const char kEnableMonitorProfile[] = "enable-monitor-profile"; 467 468// Enables use of cache if offline, even if it's stale 469const char kEnableOfflineCacheAccess[] = "enable-offline-cache-access"; 470 471// Enables use of hardware overlay for fullscreen video playback. Android only. 472const char kEnableOverlayFullscreenVideo[] = "enable-overlay-fullscreen-video"; 473 474// Enables overlay scrollbars on Aura or Linux. Does nothing on Mac. 475const char kEnableOverlayScrollbars[] = "enable-overlay-scrollbars"; 476 477// Forward overscroll event data from the renderer to the browser. 478const char kEnableOverscrollNotifications[] = "enable-overscroll-notifications"; 479 480// Enables compositor-accelerated touch-screen pinch gestures. 481const char kEnablePinch[] = "enable-pinch"; 482 483// Enable caching of pre-parsed JS script data. See http://crbug.com/32407. 484const char kEnablePreparsedJsCaching[] = "enable-preparsed-js-caching"; 485 486// Enable privileged WebGL extensions; without this switch such extensions are 487// available only to Chrome extensions. 488const char kEnablePrivilegedWebGLExtensions[] = 489 "enable-privileged-webgl-extensions"; 490 491// Aggressively free GPU command buffers belonging to hidden tabs. 492const char kEnablePruneGpuCommandBuffers[] = 493 "enable-prune-gpu-command-buffers"; 494 495// Enables the CSS multicol implementation that uses the regions implementation. 496const char kEnableRegionBasedColumns[] = 497 "enable-region-based-columns"; 498 499// Cause the OS X sandbox write to syslog every time an access to a resource 500// is denied by the sandbox. 501const char kEnableSandboxLogging[] = "enable-sandbox-logging"; 502 503// Enables the Skia benchmarking extension 504const char kEnableSkiaBenchmarking[] = "enable-skia-benchmarking"; 505 506// On platforms that support it, enables smooth scroll animation. 507const char kEnableSmoothScrolling[] = "enable-smooth-scrolling"; 508 509// Allow the compositor to use its software implementation if GL fails. 510const char kEnableSoftwareCompositing[] = "enable-software-compositing"; 511 512// Enable spatial navigation 513const char kEnableSpatialNavigation[] = "enable-spatial-navigation"; 514 515// Enables the synthesis part of the Web Speech API. 516const char kEnableSpeechSynthesis[] = "enable-speech-synthesis"; 517 518// Enables TLS cached info extension. 519const char kEnableSSLCachedInfo[] = "enable-ssl-cached-info"; 520 521// Enables StatsTable, logging statistics to a global named shared memory table. 522const char kEnableStatsTable[] = "enable-stats-table"; 523 524// Experimentally ensures that each renderer process: 525// 1) Only handles rendering for pages from a single site, apart from iframes. 526// (Note that a page can reference content from multiple origins due to images, 527// JavaScript files, etc. Cross-site iframes are also loaded in-process.) 528// 2) Only has authority to see or use cookies for the page's top-level origin. 529// (So if a.com iframes b.com, the b.com network request will be sent without 530// cookies.) 531// This is expected to break compatibility with many pages for now. Unlike the 532// --site-per-process flag, this allows cross-site iframes, but it blocks all 533// cookies on cross-site requests. 534const char kEnableStrictSiteIsolation[] = "enable-strict-site-isolation"; 535 536// Enable support for ServiceWorker. See 537// https://github.com/slightlyoff/ServiceWorker for more information. 538const char kEnableServiceWorker[] = "enable-service-worker"; 539 540// Enable use of experimental TCP sockets API for sending data in the 541// SYN packet. 542const char kEnableTcpFastOpen[] = "enable-tcp-fastopen"; 543 544// Enable Text Service Framework(TSF) for text inputting instead of IMM32. This 545// flag is ignored on Metro environment. 546const char kEnableTextServicesFramework[] = "enable-text-services-framework"; 547 548// Enable multithreaded GPU compositing of web content. 549const char kEnableThreadedCompositing[] = "enable-threaded-compositing"; 550 551// Enable accelerated overflow scrolling in all cases. 552const char kEnableUniversalAcceleratedOverflowScroll[] = 553 "enable-universal-accelerated-overflow-scroll"; 554 555// Enable screen capturing support for MediaStream API. 556const char kEnableUserMediaScreenCapturing[] = 557 "enable-usermedia-screen-capturing"; 558 559// Enables the use of the viewport meta tag, which allows 560// pages to control aspects of their own layout. This also turns on touch-screen 561// pinch gestures. 562const char kEnableViewport[] = "enable-viewport"; 563 564// Enables moving cursor by word in visual order. 565const char kEnableVisualWordMovement[] = "enable-visual-word-movement"; 566 567// Enable the Vtune profiler support. 568const char kEnableVtune[] = "enable-vtune-support"; 569 570// Enable CSS Transitions / Animations on the Web Animations model. 571const char kEnableWebAnimationsCSS[] = "enable-web-animations-css"; 572 573// Enable SVG Animations on the Web Animations model. 574const char kEnableWebAnimationsSVG[] = "enable-web-animations-svg"; 575 576// Enables WebGL extensions not yet approved by the community. 577const char kEnableWebGLDraftExtensions[] = "enable-webgl-draft-extensions"; 578 579// Enables Web MIDI API. 580const char kEnableWebMIDI[] = "enable-web-midi"; 581 582// Load NPAPI plugins from the specified directory. 583const char kExtraPluginDir[] = "extra-plugin-dir"; 584 585// If accelerated compositing is supported, always enter compositing mode for 586// the base layer even when compositing is not strictly required. 587const char kForceCompositingMode[] = "force-compositing-mode"; 588 589// Some field trials may be randomized in the browser, and the randomly selected 590// outcome needs to be propagated to the renderer. For instance, this is used 591// to modify histograms recorded in the renderer, or to get the renderer to 592// also set of its state (initialize, or not initialize components) to match the 593// experiment(s). The option is also useful for forcing field trials when 594// testing changes locally. The argument is a list of name and value pairs, 595// separated by slashes. See FieldTrialList::CreateTrialsFromString() in 596// field_trial.h for details. 597const char kForceFieldTrials[] = "force-fieldtrials"; 598 599// Force renderer accessibility to be on instead of enabling it on demand when 600// a screen reader is detected. The disable-renderer-accessibility switch 601// overrides this if present. 602const char kForceRendererAccessibility[] = "force-renderer-accessibility"; 603 604// Passes gpu device_id from browser process to GPU process. 605const char kGpuDeviceID[] = "gpu-device-id"; 606 607// Passes gpu driver_vendor from browser process to GPU process. 608const char kGpuDriverVendor[] = "gpu-driver-vendor"; 609 610// Passes gpu driver_version from browser process to GPU process. 611const char kGpuDriverVersion[] = "gpu-driver-version"; 612 613// Extra command line options for launching the GPU process (normally used 614// for debugging). Use like renderer-cmd-prefix. 615const char kGpuLauncher[] = "gpu-launcher"; 616 617// Makes this process a GPU sub-process. 618const char kGpuProcess[] = "gpu-process"; 619 620// Allow shmat system call in GPU sandbox. 621const char kGpuSandboxAllowSysVShm[] = "gpu-sandbox-allow-sysv-shm"; 622 623// Causes the GPU process to display a dialog on launch. 624const char kGpuStartupDialog[] = "gpu-startup-dialog"; 625 626// Passes gpu vendor_id from browser process to GPU process. 627const char kGpuVendorID[] = "gpu-vendor-id"; 628 629// These mappings only apply to the host resolver. 630const char kHostResolverRules[] = "host-resolver-rules"; 631 632// Ignores certificate-related errors. 633const char kIgnoreCertificateErrors[] = "ignore-certificate-errors"; 634 635// Ignores GPU blacklist. 636const char kIgnoreGpuBlacklist[] = "ignore-gpu-blacklist"; 637 638// Run the GPU process as a thread in the browser process. 639const char kInProcessGPU[] = "in-process-gpu"; 640 641// Runs plugins inside the renderer process 642const char kInProcessPlugins[] = "in-process-plugins"; 643 644// Specifies the flags passed to JS engine 645const char kJavaScriptFlags[] = "js-flags"; 646 647// Load an NPAPI plugin from the specified path. 648const char kLoadPlugin[] = "load-plugin"; 649 650// Logs GPU control list decisions when enforcing blacklist rules. 651const char kLogGpuControlListDecisions[] = "log-gpu-control-list-decisions"; 652 653// Sets the minimum log level. Valid values are from 0 to 3: 654// INFO = 0, WARNING = 1, LOG_ERROR = 2, LOG_FATAL = 3. 655const char kLoggingLevel[] = "log-level"; 656 657// Enables displaying net log events on the command line, or writing the events 658// to a separate file if a file name is given. 659const char kLogNetLog[] = "log-net-log"; 660 661// Make plugin processes log their sent and received messages to VLOG(1). 662const char kLogPluginMessages[] = "log-plugin-messages"; 663 664// Sets the width and height above which a composited layer will get tiled. 665const char kMaxUntiledLayerHeight[] = "max-untiled-layer-height"; 666const char kMaxUntiledLayerWidth[] = "max-untiled-layer-width"; 667 668// Sample memory usage with high frequency and store the results to the 669// Renderer.Memory histogram. Used in memory tests. 670const char kMemoryMetrics[] = "memory-metrics"; 671 672// Mutes audio sent to the audio device so it is not audible during 673// automated testing. 674const char kMuteAudio[] = "mute-audio"; 675 676// Don't send HTTP-Referer headers. 677const char kNoReferrers[] = "no-referrers"; 678 679// Disables the sandbox for all process types that are normally sandboxed. 680const char kNoSandbox[] = "no-sandbox"; 681 682// Enables or disables history navigation in response to horizontal overscroll. 683// Set the value to '1' to enable the feature, and set to '0' to disable. 684// Defaults to enabled. 685const char kOverscrollHistoryNavigation[] = 686 "overscroll-history-navigation"; 687 688// Specifies a command that should be used to launch the plugin process. Useful 689// for running the plugin process through purify or quantify. Ex: 690// --plugin-launcher="path\to\purify /Run=yes" 691const char kPluginLauncher[] = "plugin-launcher"; 692 693// Tells the plugin process the path of the plugin to load 694const char kPluginPath[] = "plugin-path"; 695 696// Causes the process to run as a plugin subprocess. 697const char kPluginProcess[] = "plugin"; 698 699// Causes the plugin process to display a dialog on launch. 700const char kPluginStartupDialog[] = "plugin-startup-dialog"; 701 702// Argument to the process type that indicates a PPAPI broker process type. 703const char kPpapiBrokerProcess[] = "ppapi-broker"; 704 705// "Command-line" arguments for the PPAPI Flash; used for debugging options. 706const char kPpapiFlashArgs[] = "ppapi-flash-args"; 707 708// Runs PPAPI (Pepper) plugins in-process. 709const char kPpapiInProcess[] = "ppapi-in-process"; 710 711// Like kPluginLauncher for PPAPI plugins. 712const char kPpapiPluginLauncher[] = "ppapi-plugin-launcher"; 713 714// Argument to the process type that indicates a PPAPI plugin process type. 715const char kPpapiPluginProcess[] = "ppapi"; 716 717// Causes the PPAPI sub process to display a dialog on launch. Be sure to use 718// --no-sandbox as well or the sandbox won't allow the dialog to display. 719const char kPpapiStartupDialog[] = "ppapi-startup-dialog"; 720 721// Runs a single process for each site (i.e., group of pages from the same 722// registered domain) the user visits. We default to using a renderer process 723// for each site instance (i.e., group of pages from the same registered 724// domain with script connections to each other). 725const char kProcessPerSite[] = "process-per-site"; 726 727// Runs each set of script-connected tabs (i.e., a BrowsingInstance) in its own 728// renderer process. We default to using a renderer process for each 729// site instance (i.e., group of pages from the same registered domain with 730// script connections to each other). 731const char kProcessPerTab[] = "process-per-tab"; 732 733// The value of this switch determines whether the process is started as a 734// renderer or plugin host. If it's empty, it's the browser. 735const char kProcessType[] = "type"; 736 737// Reduces the GPU process sandbox to be less strict. 738const char kReduceGpuSandbox[] = "reduce-gpu-sandbox"; 739 740// Register Pepper plugins (see pepper_plugin_list.cc for its format). 741const char kRegisterPepperPlugins[] = "register-pepper-plugins"; 742 743 744// Enables remote debug over HTTP on the specified port. 745const char kRemoteDebuggingPort[] = "remote-debugging-port"; 746 747// Causes the renderer process to throw an assertion on launch. 748const char kRendererAssertTest[] = "renderer-assert-test"; 749 750// On POSIX only: the contents of this flag are prepended to the renderer 751// command line. Useful values might be "valgrind" or "xterm -e gdb --args". 752const char kRendererCmdPrefix[] = "renderer-cmd-prefix"; 753 754// Causes the process to run as renderer instead of as browser. 755const char kRendererProcess[] = "renderer"; 756 757// Overrides the default/calculated limit to the number of renderer processes. 758// Very high values for this setting can lead to high memory/resource usage 759// or instability. 760const char kRendererProcessLimit[] = "renderer-process-limit"; 761 762// Causes the renderer process to display a dialog on launch. 763const char kRendererStartupDialog[] = "renderer-startup-dialog"; 764 765// Causes the process to run as a sandbox IPC subprocess. 766const char kSandboxIPCProcess[] = "sandbox-ipc"; 767 768// Enables or disables scroll end effect in response to vertical overscroll. 769// Set the value to '1' to enable the feature, and set to '0' to disable. 770// Defaults to disabled. 771const char kScrollEndEffect[] = "scroll-end-effect"; 772 773// Visibly render a border around paint rects in the web page to help debug 774// and study painting behavior. 775const char kShowPaintRects[] = "show-paint-rects"; 776 777// Map mouse input events into touch gesture events. Useful for debugging touch 778// gestures without needing a touchscreen. 779const char kSimulateTouchScreenWithMouse[] = 780 "simulate-touch-screen-with-mouse"; 781 782// Runs the renderer and plugins in the same process as the browser 783const char kSingleProcess[] = "single-process"; 784 785// Experimentally enforces a one-site-per-process security policy. 786// All cross-site navigations force process swaps, and we can restrict a 787// renderer process's access rights based on its site. For details, see: 788// http://www.chromium.org/developers/design-documents/site-isolation 789// 790// Unlike --enable-strict-site-isolation (which allows cross-site iframes), 791// this flag blocks cross-site documents even in iframes, until out-of-process 792// iframe support is available. Cross-site network requests do attach the 793// normal set of cookies, but a renderer process is only allowed to view or 794// modify cookies for its own site (via JavaScript). 795// TODO(irobert): Implement the cross-site document blocking in 796// http://crbug.com/159215. 797const char kSitePerProcess[] = "site-per-process"; 798 799// Skip gpu info collection, blacklist loading, and blacklist auto-update 800// scheduling at browser startup time. 801// Therefore, all GPU features are available, and about:gpu page shows empty 802// content. The switch is intended only for layout tests. 803// TODO(gab): Get rid of this switch entirely. 804const char kSkipGpuDataLoading[] = "skip-gpu-data-loading"; 805 806// Specifies the request key for the continuous speech recognition webservice. 807const char kSpeechRecognitionWebserviceKey[] = "speech-service-key"; 808 809// Specifies if the |StatsCollectionController| needs to be bound in the 810// renderer. This binding happens on per-frame basis and hence can potentially 811// be a performance bottleneck. One should only enable it when running a test 812// that needs to access the provided statistics. 813const char kStatsCollectionController[] = 814 "enable-stats-collection-bindings"; 815 816// Upscale defaults to "good". 817const char kTabCaptureDownscaleQuality[] = "tab-capture-downscale-quality"; 818 819// Scaling quality for capturing tab. Should be one of "fast", "good" or "best". 820// One flag for upscaling, one for downscaling. 821// Upscale defaults to "best". 822const char kTabCaptureUpscaleQuality[] = "tab-capture-upscale-quality"; 823 824// GestureTapDown events are deferred by this many miillseconds before 825// sending them to the renderer. 826const char kTapDownDeferralTimeMs[] = "tap-down-deferral-time"; 827 828// Allows for forcing socket connections to http/https to use fixed ports. 829const char kTestingFixedHttpPort[] = "testing-fixed-http-port"; 830const char kTestingFixedHttpsPort[] = "testing-fixed-https-port"; 831 832// Runs the security test for the renderer sandbox. 833const char kTestSandbox[] = "test-sandbox"; 834 835// Causes TRACE_EVENT flags to be recorded beginning with shutdown. Optionally, 836// can specify the specific trace categories to include (e.g. 837// --trace-shutdown=base,net) otherwise, all events are recorded. 838// --trace-shutdown-file can be used to control where the trace log gets stored 839// to since there is otherwise no way to access the result. 840const char kTraceShutdown[] = "trace-shutdown"; 841 842// If supplied, sets the file which shutdown tracing will be stored into, if 843// omitted the default will be used "chrometrace.log" in the current directory. 844// Has no effect unless --trace-shutdown is also supplied. 845// Example: --trace-shutdown --trace-shutdown-file=/tmp/trace_event.log 846const char kTraceShutdownFile[] = "trace-shutdown-file"; 847 848// Causes TRACE_EVENT flags to be recorded from startup. Optionally, can 849// specify the specific trace categories to include (e.g. 850// --trace-startup=base,net) otherwise, all events are recorded. Setting this 851// flag results in the first call to BeginTracing() to receive all trace events 852// since startup. In Chrome, you may find --trace-startup-file and 853// --trace-startup-duration to control the auto-saving of the trace (not 854// supported in the base-only TraceLog component). 855const char kTraceStartup[] = "trace-startup"; 856 857// Sets the time in seconds until startup tracing ends. If omitted a default of 858// 5 seconds is used. Has no effect without --trace-startup, or if 859// --startup-trace-file=none was supplied. 860const char kTraceStartupDuration[] = "trace-startup-duration"; 861 862// If supplied, sets the file which startup tracing will be stored into, if 863// omitted the default will be used "chrometrace.log" in the current directory. 864// Has no effect unless --trace-startup is also supplied. 865// Example: --trace-startup --trace-startup-file=/tmp/trace_event.log 866// As a special case, can be set to 'none' - this disables automatically saving 867// the result to a file and the first manually recorded trace will then receive 868// all events since startup. 869const char kTraceStartupFile[] = "trace-startup-file"; 870 871 872 873// Prioritizes the UI's command stream in the GPU process 874extern const char kUIPrioritizeInGpuProcess[] = 875 "ui-prioritize-in-gpu-process"; 876 877// Use fake device for MediaStream to replace actual camera and microphone. 878const char kUseFakeDeviceForMediaStream[] = "use-fake-device-for-media-stream"; 879 880// Bypass the media stream infobar by selecting the default device for media 881// streams (e.g. WebRTC). Works with --use-fake-device-for-media-stream. 882const char kUseFakeUIForMediaStream[] = "use-fake-ui-for-media-stream"; 883 884// Use hardware gpu, if available, for tests. 885const char kUseGpuInTests[] = "use-gpu-in-tests"; 886 887// Set when Chromium should use a mobile user agent. 888const char kUseMobileUserAgent[] = "use-mobile-user-agent"; 889 890// A string used to override the default user agent with a custom one. 891const char kUserAgent[] = "user-agent"; 892 893// On POSIX only: the contents of this flag are prepended to the utility 894// process command line. Useful values might be "valgrind" or "xterm -e gdb 895// --args". 896const char kUtilityCmdPrefix[] = "utility-cmd-prefix"; 897 898// Causes the process to run as a utility subprocess. 899const char kUtilityProcess[] = "utility"; 900 901// The utility process is sandboxed, with access to one directory. This flag 902// specifies the directory that can be accessed. 903const char kUtilityProcessAllowedDir[] = "utility-allowed-dir"; 904 905// Allows MDns to access network in sandboxed process. 906const char kUtilityProcessEnableMDns[] = "utility-enable-mdns"; 907 908// Will add kWaitForDebugger to every child processes. If a value is passed, it 909// will be used as a filter to determine if the child process should have the 910// kWaitForDebugger flag passed on or not. 911const char kWaitForDebuggerChildren[] = "wait-for-debugger-children"; 912 913// Choose which logging channels in WebCore to activate. See 914// Logging.cpp in WebKit's WebCore for a list of available channels. 915const char kWebCoreLogChannels[] = "webcore-log-channels"; 916 917// Causes the process to run as a worker subprocess. 918const char kWorkerProcess[] = "worker"; 919 920// The prefix used when starting the zygote process. (i.e. 'gdb --args') 921const char kZygoteCmdPrefix[] = "zygote-cmd-prefix"; 922 923// Causes the process to run as a renderer zygote. 924const char kZygoteProcess[] = "zygote"; 925 926#if defined(ENABLE_WEBRTC) 927// Disable WebRTC device enumeration. 928const char kDisableDeviceEnumeration[] = "disable-device-enumeration"; 929 930// Disable WebRTC DataChannels SCTP wire protocol support. 931const char kDisableSCTPDataChannels[] = "disable-sctp-data-channels"; 932 933// Disables HW decode acceleration for WebRTC. 934const char kDisableWebRtcHWDecoding[] = "disable-webrtc-hw-decoding"; 935 936// Disables HW encode acceleration for WebRTC. 937const char kDisableWebRtcHWEncoding[] = "disable-webrtc-hw-encoding"; 938 939// Enables WebRTC AEC recordings. 940const char kEnableWebRtcAecRecordings[] = "enable-webrtc-aec-recordings"; 941 942// Enable WebRTC to open TCP server sockets. 943const char kEnableWebRtcTcpServerSocket[] = "enable-webrtc-tcp-server-socket"; 944 945// Enables VP8 HW encode acceleration for WebRTC. 946const char kEnableWebRtcHWVp8Encoding[] = "enable-webrtc-hw-vp8-encoding"; 947#endif 948 949#if defined(OS_ANDROID) 950// Disable user gesture requirement for the media element to enter fullscreen. 951const char kDisableGestureRequirementForMediaFullscreen[] = 952 "disable-gesture-requirement-for-media-fullscreen"; 953 954// Disable user gesture requirement for media playback. 955const char kDisableGestureRequirementForMediaPlayback[] = 956 "disable-gesture-requirement-for-media-playback"; 957 958// Disable history logging for media elements. 959const char kDisableMediaHistoryLogging[] = "disable-media-history"; 960 961// Disable overscroll edge effects like those found in Android views. 962const char kDisableOverscrollEdgeEffect[] = "disable-overscroll-edge-effect"; 963 964// WebRTC is enabled by default on Android. 965const char kDisableWebRTC[] = "disable-webrtc"; 966 967// Enable the recognition part of the Web Speech API. 968const char kEnableSpeechRecognition[] = "enable-speech-recognition"; 969 970// Don't display any scrollbars. This is useful for Android WebView where 971// the system manages the scrollbars instead. 972const char kHideScrollbars[] = "hide-scrollbars"; 973 974// The telephony region (ISO country code) to use in phone number detection. 975const char kNetworkCountryIso[] = "network-country-iso"; 976 977// Enables remote debug over HTTP on the specified socket name. 978const char kRemoteDebuggingSocketName[] = "remote-debugging-socket-name"; 979#endif 980 981#if defined(OS_CHROMEOS) 982// Disables panel fitting (used for mirror mode). 983const char kDisablePanelFitting[] = "disable-panel-fitting"; 984#endif 985 986#if defined(OS_MACOSX) && !defined(OS_IOS) 987const char kDisableCarbonInterposing[] = "disable-carbon-interposing"; 988 989// Disables support for Core Animation plugins. This is triggered when 990// accelerated compositing is disabled. See http://crbug.com/122430 . 991const char kDisableCoreAnimationPlugins[] = 992 "disable-core-animation-plugins"; 993 994// Use core animation to draw the RenderWidgetHostView on Mac. 995const char kUseCoreAnimation[] = "use-core-animation"; 996#endif 997 998#if defined(OS_POSIX) 999// Causes the child processes to cleanly exit via calling exit(). 1000const char kChildCleanExit[] = "child-clean-exit"; 1001#endif 1002 1003#if defined(USE_AURA) 1004// Forces usage of the test compositor. Needed to run ui tests on bots. 1005extern const char kTestCompositor[] = "test-compositor"; 1006#endif 1007 1008// Don't dump stuff here, follow the same order as the header. 1009 1010} // namespace switches 1011