content_switches.cc revision d0247b1b59f9c528cb6df88b4f2b9afaf80d181e
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// Handles URL requests by NPAPI plugins directly through the browser, instead 67// of going through the renderer. This will be the new default, but it's not 68// turned on initially until we do more testing. 69const char kDirectNPAPIRequests[] = "direct-npapi-requests"; 70 71// Disable antialiasing on 2d canvas. 72const char kDisable2dCanvasAntialiasing[] = "disable-canvas-aa"; 73 74// Disables client-visible 3D APIs, in particular WebGL and Pepper 3D. 75// This is controlled by policy and is kept separate from the other 76// enable/disable switches to avoid accidentally regressing the policy 77// support for controlling access to these APIs. 78const char kDisable3DAPIs[] = "disable-3d-apis"; 79 80// Disable gpu-accelerated 2d canvas. 81const char kDisableAccelerated2dCanvas[] = "disable-accelerated-2d-canvas"; 82 83// Disables accelerated compositing. 84const char kDisableAcceleratedCompositing[] = "disable-accelerated-compositing"; 85 86// Disables accelerated compositing for backgrounds of root layers with 87// background-attachment: fixed. 88const char kDisableAcceleratedFixedRootBackground[] = 89 "disable-accelerated-fixed-root-background"; 90 91// Disables the hardware acceleration of 3D CSS and animation. 92const char kDisableAcceleratedLayers[] = "disable-accelerated-layers"; 93 94// Disables accelerated compositing for overflow scroll. 95const char kDisableAcceleratedOverflowScroll[] = 96 "disable-accelerated-overflow-scroll"; 97 98// Disables the hardware acceleration of plugins. 99const char kDisableAcceleratedPlugins[] = "disable-accelerated-plugins"; 100 101// Disables GPU accelerated video display. 102const char kDisableAcceleratedVideo[] = "disable-accelerated-video"; 103 104// Disables hardware acceleration of video decode, where available. 105const char kDisableAcceleratedVideoDecode[] = 106 "disable-accelerated-video-decode"; 107 108// Disables the alternate window station for the renderer. 109const char kDisableAltWinstation[] = "disable-winsta"; 110 111// Disable the ApplicationCache. 112const char kDisableApplicationCache[] = "disable-application-cache"; 113// 114// TODO(scherkus): remove --disable-audio when we have a proper fallback 115// mechanism. 116const char kDisableAudio[] = "disable-audio"; 117 118// Disable limits on the number of backing stores. Can prevent blinking for 119// users with many windows/tabs and lots of memory. 120const char kDisableBackingStoreLimit[] = "disable-backing-store-limit"; 121 122// Enables browser plugin compositing experiment. 123const char kDisableBrowserPluginCompositing[] = 124 "disable-browser-plugin-compositing"; 125 126// See comment for kEnableCompositingForFixedPosition. 127const char kDisableCompositingForFixedPosition[] = 128 "disable-fixed-position-compositing"; 129 130// See comment for kEnableCompositingForTransition. 131const char kDisableCompositingForTransition[] = 132 "disable-transition-compositing"; 133 134// Disables HTML5 DB support. 135const char kDisableDatabases[] = "disable-databases"; 136 137// Disables delegated renderer. 138const char kDisableDelegatedRenderer[] = "disable-delegated-renderer"; 139 140// Disables desktop notifications (default enabled on windows). 141const char kDisableDesktopNotifications[] = "disable-desktop-notifications"; 142 143// Disable device motion events. 144const char kDisableDeviceMotion[] = "disable-device-motion"; 145 146// Disable device orientation events. 147const char kDisableDeviceOrientation[] = "disable-device-orientation"; 148 149// Disable experimental WebGL support. 150const char kDisableExperimentalWebGL[] = "disable-webgl"; 151 152// Disable FileSystem API. 153const char kDisableFileSystem[] = "disable-file-system"; 154 155const char kDisableFixedPositionCreatesStackingContext[] 156 = "disable-fixed-position-creates-stacking-context"; 157 158// Disable 3D inside of flapper. 159const char kDisableFlash3d[] = "disable-flash-3d"; 160 161// Disable Stage3D inside of flapper. 162const char kDisableFlashStage3d[] = "disable-flash-stage3d"; 163 164// This flag disables force compositing mode and prevents it from being enabled 165// via field trials. 166const char kDisableForceCompositingMode[] = "disable-force-compositing-mode"; 167 168// Disable the JavaScript Full Screen API. 169const char kDisableFullScreen[] = "disable-fullscreen"; 170 171// Suppresses support for the Geolocation javascript API. 172const char kDisableGeolocation[] = "disable-geolocation"; 173 174const char kDisableGestureTapHighlight[] = "disable-gesture-tap-highlight"; 175 176// Disable GL multisampling. 177const char kDisableGLMultisampling[] = "disable-gl-multisampling"; 178 179// Disables GPU hardware acceleration. If software renderer is not in place, 180// then the GPU process won't launch. 181const char kDisableGpu[] = "disable-gpu"; 182 183// Prevent the compositor from using its GPU implementation. 184const char kDisableGpuCompositing[] = "disable-gpu-compositing"; 185 186// Do not launch the GPU process shortly after browser process launch. Instead 187// launch it when it is first needed. 188const char kDisableGpuProcessPrelaunch[] = "disable-gpu-process-prelaunch"; 189 190// Disable the GPU process sandbox. 191const char kDisableGpuSandbox[] = "disable-gpu-sandbox"; 192 193// Disable the thread that crashes the GPU process if it stops responding to 194// messages. 195const char kDisableGpuWatchdog[] = "disable-gpu-watchdog"; 196 197// Suppresses hang monitor dialogs in renderer processes. This may allow slow 198// unload handlers on a page to prevent the tab from closing, but the Task 199// Manager can be used to terminate the offending process in this case. 200const char kDisableHangMonitor[] = "disable-hang-monitor"; 201 202// Disable the RenderThread's HistogramCustomizer. 203const char kDisableHistogramCustomizer[] = "disable-histogram-customizer"; 204 205// Disables HTML-based desktop notifications. 206const char kDisableHTMLNotifications[] = "disable-html-notifications"; 207 208// Disable the use of an ImageTransportSurface. This means the GPU process 209// will present the rendered page rather than the browser process. 210const char kDisableImageTransportSurface[] = "disable-image-transport-surface"; 211 212// Prevent Java from running. 213const char kDisableJava[] = "disable-java"; 214 215// Don't execute JavaScript (browser JS like the new tab page still runs). 216const char kDisableJavaScript[] = "disable-javascript"; 217 218// Disables prefixed Encrypted Media API (e.g. webkitGenerateKeyRequest()). 219const char kDisableLegacyEncryptedMedia[] = "disable-legacy-encrypted-media"; 220 221// Disable LocalStorage. 222const char kDisableLocalStorage[] = "disable-local-storage"; 223 224// Force logging to be disabled. Logging is enabled by default in debug 225// builds. 226const char kDisableLogging[] = "disable-logging"; 227 228// Disable Pepper3D. 229const char kDisablePepper3d[] = "disable-pepper-3d"; 230 231// Disables compositor-accelerated touch-screen pinch gestures. 232const char kDisablePinch[] = "disable-pinch"; 233 234// Prevent plugins from running. 235const char kDisablePlugins[] = "disable-plugins"; 236 237// Disable discovering third-party plug-ins. Effectively loading only 238// ones shipped with the browser plus third-party ones as specified by 239// --extra-plugin-dir and --load-plugin switches. 240const char kDisablePluginsDiscovery[] = "disable-plugins-discovery"; 241 242// Disables remote web font support. SVG font should always work whether this 243// option is specified or not. 244const char kDisableRemoteFonts[] = "disable-remote-fonts"; 245 246// Turns off the accessibility in the renderer. 247const char kDisableRendererAccessibility[] = "disable-renderer-accessibility"; 248 249// Disable the seccomp filter sandbox (seccomp-bpf) (Linux only). 250const char kDisableSeccompFilterSandbox[] = "disable-seccomp-filter-sandbox"; 251 252// Disable session storage. 253const char kDisableSessionStorage[] = "disable-session-storage"; 254 255// Disable the setuid sandbox (Linux only). 256const char kDisableSetuidSandbox[] = "disable-setuid-sandbox"; 257 258// Enable shared workers. Functionality not yet complete. 259const char kDisableSharedWorkers[] = "disable-shared-workers"; 260 261// Disables site-specific tailoring to compatibility issues in WebKit. 262const char kDisableSiteSpecificQuirks[] = "disable-site-specific-quirks"; 263 264// Disable smooth scrolling for testing. 265const char kDisableSmoothScrolling[] = "disable-smooth-scrolling"; 266 267// Disables the use of a 3D software rasterizer. 268const char kDisableSoftwareRasterizer[] = "disable-software-rasterizer"; 269 270// Disables speech input. 271const char kDisableSpeechInput[] = "disable-speech-input"; 272 273// Disable False Start in SSL and TLS connections. 274const char kDisableSSLFalseStart[] = "disable-ssl-false-start"; 275 276// Disable multithreaded GPU compositing of web content. 277const char kDisableThreadedCompositing[] = "disable-threaded-compositing"; 278 279// Disables the threaded HTML parser in WebKit 280const char kDisableThreadedHTMLParser[] = "disable-threaded-html-parser"; 281 282// Disable web audio API. 283const char kDisableWebAudio[] = "disable-webaudio"; 284 285// Disables prefixed Media Source API (i.e., the WebKitMediaSource object). 286const char kDisableWebKitMediaSource[] = "disable-webkit-media-source"; 287 288// Don't enforce the same-origin policy. (Used by people testing their sites.) 289const char kDisableWebSecurity[] = "disable-web-security"; 290 291// Disables WebKit's XSSAuditor. The XSSAuditor mitigates reflective XSS. 292const char kDisableXSSAuditor[] = "disable-xss-auditor"; 293 294// Specifies if the |DOMAutomationController| needs to be bound in the 295// renderer. This binding happens on per-frame basis and hence can potentially 296// be a performance bottleneck. One should only enable it when automating dom 297// based tests. 298const char kDomAutomationController[] = "dom-automation"; 299 300// Enable gpu-accelerated SVG/W3C filters. 301const char kEnableAcceleratedFilters[] = "enable-accelerated-filters"; 302 303// Enables accelerated compositing for backgrounds of root layers with 304// background-attachment: fixed. Requires kForceCompositingMode. 305const char kEnableAcceleratedFixedRootBackground[] = 306 "enable-accelerated-fixed-root-background"; 307 308// Enables accelerated compositing for overflow scroll. Promotes eligible 309// overflow:scroll elements to layers to enable accelerated scrolling for them. 310const char kEnableAcceleratedOverflowScroll[] = 311 "enable-accelerated-overflow-scroll"; 312 313// Enables accelerated compositing for scrollable frames for accelerated 314// scrolling for them. Requires kForceCompositingMode. 315const char kEnableAcceleratedScrollableFrames[] = 316 "enable-accelerated-scrollable-frames"; 317 318// Turns on extremely verbose logging of accessibility events. 319const char kEnableAccessibilityLogging[] = "enable-accessibility-logging"; 320 321// Enable notifications of audible/silent audio output from a render view. 322// 323// TODO(miu): Remove --enable-audible-notifications once the feature goes 324// live. http://crbug.com/178934 325const char kEnableAudibleNotifications[] = "enable-audible-notifications"; 326 327// Use a begin frame signal from browser to renderer to schedule rendering. 328const char kEnableBeginFrameScheduling[] = "enable-begin-frame-scheduling"; 329 330// Synchronize delivery and response of input events to and from the renderer. 331const char kEnableBrowserInputController[] = "enable-browser-input-controller"; 332 333// Enables browser plugin for all types of pages. 334const char kEnableBrowserPluginForAllViewTypes[] = 335 "enable-browser-plugin-for-all-view-types"; 336 337// Enables Drag and Drop into and out of Browser Plugin. 338// kEnableBrowserPluginGuestViews must also be set at this time. 339const char kEnableBrowserPluginDragDrop[] = "enable-browser-plugin-drag-drop"; 340 341// Enables accelerated scrolling by the compositor for frames. Requires 342// kForceCompositingMode and kEnableAcceleratedScrollableFrames. 343const char kEnableCompositedScrollingForFrames[] = 344 "enable-composited-scrolling-for-frames"; 345 346// Enable the creation of compositing layers for fixed position 347// elements. Three options are needed to support four possible scenarios: 348// 1. Default (disabled) 349// 2. Enabled always (to allow dogfooding) 350// 3. Disabled always (to give safety fallback for users) 351// 4. Enabled only if we detect a highDPI display 352// 353// Option #4 may soon be the default, because the feature is needed soon for 354// high DPI, but cannot be used (yet) for low DPI. Options #2 and #3 will 355// override Option #4. 356const char kEnableCompositingForFixedPosition[] = 357 "enable-fixed-position-compositing"; 358 359// Enable/Disable the creation of compositing layers for RenderLayers with a 360// transition on a property that supports accelerated animation (that is, 361// opacity, -webkit-transform, and -webkit-filter), even when no animation is 362// running. These options allow for three possible scenarios: 363// 1. Default (enabled only if we dectect a highDPI display) 364// 2. Enabled always. 365// 3. Disabled always. 366const char kEnableCompositingForTransition[] = 367 "enable-transition-compositing"; 368 369// Enables CSS3 custom filters 370const char kEnableCssShaders[] = "enable-css-shaders"; 371 372// Defer image decoding in WebKit until painting. 373const char kEnableDeferredImageDecoding[] = "enable-deferred-image-decoding"; 374 375// Enables delegated renderer. 376const char kEnableDelegatedRenderer[] = "enable-delegated-renderer"; 377 378// Enables restarting interrupted downloads. 379const char kEnableDownloadResumption[] = "enable-download-resumption"; 380 381// Enables support for Encrypted Media Extensions (e.g. MediaKeys). 382const char kEnableEncryptedMedia[] = "enable-encrypted-media"; 383 384// Enable experimental canvas features, e.g. canvas 2D context attributes 385const char kEnableExperimentalCanvasFeatures[] = 386 "enable-experimental-canvas-features"; 387 388// Enables Web Platform features that are in development. 389const char kEnableExperimentalWebPlatformFeatures[] = 390 "enable-experimental-web-platform-features"; 391 392// Enable an experimental WebSocket implementation. 393const char kEnableExperimentalWebSocket[] = "enable-experimental-websocket"; 394 395// By default, a page is laid out to fill the entire width of the window. 396// This flag fixes the layout of the page to a default of 980 CSS pixels, 397// or to a specified width and height using --enable-fixed-layout=w,h 398const char kEnableFixedLayout[] = "enable-fixed-layout"; 399 400const char kEnableFixedPositionCreatesStackingContext[] 401 = "enable-fixed-position-creates-stacking-context"; 402 403// Enable Gesture Tap Highlight 404const char kEnableGestureTapHighlight[] = "enable-gesture-tap-highlight"; 405 406// Enables the GPU benchmarking extension 407const char kEnableGpuBenchmarking[] = "enable-gpu-benchmarking"; 408 409// Enables TRACE for GL calls in the renderer. 410const char kEnableGpuClientTracing[] = "enable-gpu-client-tracing"; 411 412// See comment for kEnableCompositingForFixedPosition. 413const char kEnableHighDpiCompositingForFixedPosition[] = 414 "enable-high-dpi-fixed-position-compositing"; 415 416#if defined(OS_WIN) 417// Use high resolution timers for TimeTicks. 418const char kEnableHighResolutionTime[] = "enable-high-resolution-time"; 419#endif 420 421// Enable HTML Imports 422extern const char kEnableHTMLImports[] = "enable-html-imports"; 423 424// Enables support for inband text tracks in media content. 425const char kEnableInbandTextTracks[] = "enable-inband-text-tracks"; 426 427// Enable inputmode attribute of HTML input or text element. 428extern const char kEnableInputModeAttribute[] = "enable-input-mode-attribute"; 429 430// Force logging to be enabled. Logging is disabled by default in release 431// builds. 432const char kEnableLogging[] = "enable-logging"; 433 434// Enables the memory benchmarking extension 435const char kEnableMemoryBenchmarking[] = "enable-memory-benchmarking"; 436 437// On Windows, converts the page to the currently-installed monitor profile. 438// This does NOT enable color management for images. The source is still 439// assumed to be sRGB. 440const char kEnableMonitorProfile[] = "enable-monitor-profile"; 441 442// Enables use of cache if offline, even if it's stale 443const char kEnableOfflineCacheAccess[] = "enable-offline-cache-access"; 444 445// Enables overlay scrollbars on Aura or Linux. Does nothing on Mac. 446const char kEnableOverlayScrollbars[] = "enable-overlay-scrollbars"; 447 448// Forward overscroll event data from the renderer to the browser. 449const char kEnableOverscrollNotifications[] = "enable-overscroll-notifications"; 450 451// Enables compositor-accelerated touch-screen pinch gestures. 452const char kEnablePinch[] = "enable-pinch"; 453 454// Enable caching of pre-parsed JS script data. See http://crbug.com/32407. 455const char kEnablePreparsedJsCaching[] = "enable-preparsed-js-caching"; 456 457// Enable privileged WebGL extensions; without this switch such extensions are 458// available only to Chrome extensions. 459const char kEnablePrivilegedWebGLExtensions[] = 460 "enable-privileged-webgl-extensions"; 461 462// Aggressively free GPU command buffers belonging to hidden tabs. 463const char kEnablePruneGpuCommandBuffers[] = 464 "enable-prune-gpu-command-buffers"; 465 466// Enables the CSS multicol implementation that uses the regions implementation. 467const char kEnableRegionBasedColumns[] = 468 "enable-region-based-columns"; 469 470// Cause the OS X sandbox write to syslog every time an access to a resource 471// is denied by the sandbox. 472const char kEnableSandboxLogging[] = "enable-sandbox-logging"; 473 474// Enables the Skia benchmarking extension 475const char kEnableSkiaBenchmarking[] = "enable-skia-benchmarking"; 476 477// On platforms that support it, enables smooth scroll animation. 478const char kEnableSmoothScrolling[] = "enable-smooth-scrolling"; 479 480// Allow the compositor to use its software implementation if GL fails. 481const char kEnableSoftwareCompositing[] = "enable-software-compositing"; 482 483// Enable spatial navigation 484const char kEnableSpatialNavigation[] = "enable-spatial-navigation"; 485 486// Enables the synthesis part of the Web Speech API. 487const char kEnableSpeechSynthesis[] = "enable-speech-synthesis"; 488 489// Enables TLS cached info extension. 490const char kEnableSSLCachedInfo[] = "enable-ssl-cached-info"; 491 492// Enables StatsTable, logging statistics to a global named shared memory table. 493const char kEnableStatsTable[] = "enable-stats-table"; 494 495// Experimentally ensures that each renderer process: 496// 1) Only handles rendering for pages from a single site, apart from iframes. 497// (Note that a page can reference content from multiple origins due to images, 498// JavaScript files, etc. Cross-site iframes are also loaded in-process.) 499// 2) Only has authority to see or use cookies for the page's top-level origin. 500// (So if a.com iframes b.com, the b.com network request will be sent without 501// cookies.) 502// This is expected to break compatibility with many pages for now. Unlike the 503// --site-per-process flag, this allows cross-site iframes, but it blocks all 504// cookies on cross-site requests. 505const char kEnableStrictSiteIsolation[] = "enable-strict-site-isolation"; 506 507// Enable use of experimental TCP sockets API for sending data in the 508// SYN packet. 509const char kEnableTcpFastOpen[] = "enable-tcp-fastopen"; 510 511// Enable Text Service Framework(TSF) for text inputting instead of IMM32. This 512// flag is ignored on Metro environment. 513const char kEnableTextServicesFramework[] = "enable-text-services-framework"; 514 515// Enable multithreaded GPU compositing of web content. 516const char kEnableThreadedCompositing[] = "enable-threaded-compositing"; 517 518// Enable screen capturing support for MediaStream API. 519const char kEnableUserMediaScreenCapturing[] = 520 "enable-usermedia-screen-capturing"; 521 522// Enables the use of the viewport meta tag, which allows 523// pages to control aspects of their own layout. This also turns on touch-screen 524// pinch gestures. 525const char kEnableViewport[] = "enable-viewport"; 526 527// Enables moving cursor by word in visual order. 528const char kEnableVisualWordMovement[] = "enable-visual-word-movement"; 529 530// Enable the Vtune profiler support. 531const char kEnableVtune[] = "enable-vtune-support"; 532 533// Enable CSS Transitions / Animations on the Web Animations model. 534const char kEnableWebAnimationsCSS[] = "enable-web-animations-css"; 535 536// Enable SVG Animations on the Web Animations model. 537const char kEnableWebAnimationsSVG[] = "enable-web-animations-svg"; 538 539// Enables WebGL extensions not yet approved by the community. 540const char kEnableWebGLDraftExtensions[] = "enable-webgl-draft-extensions"; 541 542// Enables Web MIDI API. 543const char kEnableWebMIDI[] = "enable-web-midi"; 544 545// Load NPAPI plugins from the specified directory. 546const char kExtraPluginDir[] = "extra-plugin-dir"; 547 548// If accelerated compositing is supported, always enter compositing mode for 549// the base layer even when compositing is not strictly required. 550const char kForceCompositingMode[] = "force-compositing-mode"; 551 552// Some field trials may be randomized in the browser, and the randomly selected 553// outcome needs to be propagated to the renderer. For instance, this is used 554// to modify histograms recorded in the renderer, or to get the renderer to 555// also set of its state (initialize, or not initialize components) to match the 556// experiment(s). The option is also useful for forcing field trials when 557// testing changes locally. The argument is a list of name and value pairs, 558// separated by slashes. See FieldTrialList::CreateTrialsFromString() in 559// field_trial.h for details. 560const char kForceFieldTrials[] = "force-fieldtrials"; 561 562// Force renderer accessibility to be on instead of enabling it on demand when 563// a screen reader is detected. The disable-renderer-accessibility switch 564// overrides this if present. 565const char kForceRendererAccessibility[] = "force-renderer-accessibility"; 566 567// Passes gpu device_id from browser process to GPU process. 568const char kGpuDeviceID[] = "gpu-device-id"; 569 570// Passes gpu driver_vendor from browser process to GPU process. 571const char kGpuDriverVendor[] = "gpu-driver-vendor"; 572 573// Passes gpu driver_version from browser process to GPU process. 574const char kGpuDriverVersion[] = "gpu-driver-version"; 575 576// Extra command line options for launching the GPU process (normally used 577// for debugging). Use like renderer-cmd-prefix. 578const char kGpuLauncher[] = "gpu-launcher"; 579 580// Makes this process a GPU sub-process. 581const char kGpuProcess[] = "gpu-process"; 582 583// Allow shmat system call in GPU sandbox. 584const char kGpuSandboxAllowSysVShm[] = "gpu-sandbox-allow-sysv-shm"; 585 586// Causes the GPU process to display a dialog on launch. 587const char kGpuStartupDialog[] = "gpu-startup-dialog"; 588 589// Passes gpu vendor_id from browser process to GPU process. 590const char kGpuVendorID[] = "gpu-vendor-id"; 591 592// These mappings only apply to the host resolver. 593const char kHostResolverRules[] = "host-resolver-rules"; 594 595// Ignores certificate-related errors. 596const char kIgnoreCertificateErrors[] = "ignore-certificate-errors"; 597 598// Ignores GPU blacklist. 599const char kIgnoreGpuBlacklist[] = "ignore-gpu-blacklist"; 600 601// Run the GPU process as a thread in the browser process. 602const char kInProcessGPU[] = "in-process-gpu"; 603 604// Runs plugins inside the renderer process 605const char kInProcessPlugins[] = "in-process-plugins"; 606 607// Specifies the flags passed to JS engine 608const char kJavaScriptFlags[] = "js-flags"; 609 610// Load an NPAPI plugin from the specified path. 611const char kLoadPlugin[] = "load-plugin"; 612 613// Sets the minimum log level. Valid values are from 0 to 3: 614// INFO = 0, WARNING = 1, LOG_ERROR = 2, LOG_FATAL = 3. 615const char kLoggingLevel[] = "log-level"; 616 617// Enables displaying net log events on the command line, or writing the events 618// to a separate file if a file name is given. 619const char kLogNetLog[] = "log-net-log"; 620 621// Make plugin processes log their sent and received messages to VLOG(1). 622const char kLogPluginMessages[] = "log-plugin-messages"; 623 624// Sets the width and height above which a composited layer will get tiled. 625const char kMaxUntiledLayerHeight[] = "max-untiled-layer-height"; 626const char kMaxUntiledLayerWidth[] = "max-untiled-layer-width"; 627 628// Sample memory usage with high frequency and store the results to the 629// Renderer.Memory histogram. Used in memory tests. 630const char kMemoryMetrics[] = "memory-metrics"; 631 632// Mutes audio sent to the audio device so it is not audible during 633// automated testing. 634const char kMuteAudio[] = "mute-audio"; 635 636// Don't send HTTP-Referer headers. 637const char kNoReferrers[] = "no-referrers"; 638 639// Disables the sandbox for all process types that are normally sandboxed. 640const char kNoSandbox[] = "no-sandbox"; 641 642// Enables not sending touch events to renderer while scrolling. 643const char kNoTouchToRendererWhileScrolling[] = 644 "no-touch-to-renderer-while-scrolling"; 645 646// Enables or disables history navigation in response to horizontal overscroll. 647// Set the value to '1' to enable the feature, and set to '0' to disable. 648// Defaults to enabled. 649const char kOverscrollHistoryNavigation[] = 650 "overscroll-history-navigation"; 651 652// Specifies a command that should be used to launch the plugin process. Useful 653// for running the plugin process through purify or quantify. Ex: 654// --plugin-launcher="path\to\purify /Run=yes" 655const char kPluginLauncher[] = "plugin-launcher"; 656 657// Tells the plugin process the path of the plugin to load 658const char kPluginPath[] = "plugin-path"; 659 660// Causes the process to run as a plugin subprocess. 661const char kPluginProcess[] = "plugin"; 662 663// Causes the plugin process to display a dialog on launch. 664const char kPluginStartupDialog[] = "plugin-startup-dialog"; 665 666// Argument to the process type that indicates a PPAPI broker process type. 667const char kPpapiBrokerProcess[] = "ppapi-broker"; 668 669// "Command-line" arguments for the PPAPI Flash; used for debugging options. 670const char kPpapiFlashArgs[] = "ppapi-flash-args"; 671 672// Runs PPAPI (Pepper) plugins in-process. 673const char kPpapiInProcess[] = "ppapi-in-process"; 674 675// Like kPluginLauncher for PPAPI plugins. 676const char kPpapiPluginLauncher[] = "ppapi-plugin-launcher"; 677 678// Argument to the process type that indicates a PPAPI plugin process type. 679const char kPpapiPluginProcess[] = "ppapi"; 680 681// Causes the PPAPI sub process to display a dialog on launch. Be sure to use 682// --no-sandbox as well or the sandbox won't allow the dialog to display. 683const char kPpapiStartupDialog[] = "ppapi-startup-dialog"; 684 685// Runs a single process for each site (i.e., group of pages from the same 686// registered domain) the user visits. We default to using a renderer process 687// for each site instance (i.e., group of pages from the same registered 688// domain with script connections to each other). 689const char kProcessPerSite[] = "process-per-site"; 690 691// Runs each set of script-connected tabs (i.e., a BrowsingInstance) in its own 692// renderer process. We default to using a renderer process for each 693// site instance (i.e., group of pages from the same registered domain with 694// script connections to each other). 695const char kProcessPerTab[] = "process-per-tab"; 696 697// The value of this switch determines whether the process is started as a 698// renderer or plugin host. If it's empty, it's the browser. 699const char kProcessType[] = "type"; 700 701// Reduces the GPU process sandbox to be less strict. 702const char kReduceGpuSandbox[] = "reduce-gpu-sandbox"; 703 704// Register Pepper plugins (see pepper_plugin_registry.cc for its format). 705const char kRegisterPepperPlugins[] = "register-pepper-plugins"; 706 707 708// Enables remote debug over HTTP on the specified port. 709const char kRemoteDebuggingPort[] = "remote-debugging-port"; 710 711// Causes the renderer process to throw an assertion on launch. 712const char kRendererAssertTest[] = "renderer-assert-test"; 713 714// On POSIX only: the contents of this flag are prepended to the renderer 715// command line. Useful values might be "valgrind" or "xterm -e gdb --args". 716const char kRendererCmdPrefix[] = "renderer-cmd-prefix"; 717 718// Causes the process to run as renderer instead of as browser. 719const char kRendererProcess[] = "renderer"; 720 721// Overrides the default/calculated limit to the number of renderer processes. 722// Very high values for this setting can lead to high memory/resource usage 723// or instability. 724const char kRendererProcessLimit[] = "renderer-process-limit"; 725 726// Causes the renderer process to display a dialog on launch. 727const char kRendererStartupDialog[] = "renderer-startup-dialog"; 728 729// Enables or disables scroll end effect in response to vertical overscroll. 730// Set the value to '1' to enable the feature, and set to '0' to disable. 731// Defaults to disabled. 732const char kScrollEndEffect[] = "scroll-end-effect"; 733 734// Visibly render a border around paint rects in the web page to help debug 735// and study painting behavior. 736const char kShowPaintRects[] = "show-paint-rects"; 737 738// Map mouse input events into touch gesture events. Useful for debugging touch 739// gestures without needing a touchscreen. 740const char kSimulateTouchScreenWithMouse[] = 741 "simulate-touch-screen-with-mouse"; 742 743// Runs the renderer and plugins in the same process as the browser 744const char kSingleProcess[] = "single-process"; 745 746// Experimentally enforces a one-site-per-process security policy. 747// All cross-site navigations force process swaps, and we can restrict a 748// renderer process's access rights based on its site. For details, see: 749// http://www.chromium.org/developers/design-documents/site-isolation 750// 751// Unlike --enable-strict-site-isolation (which allows cross-site iframes), 752// this flag blocks cross-site documents even in iframes, until out-of-process 753// iframe support is available. Cross-site network requests do attach the 754// normal set of cookies, but a renderer process is only allowed to view or 755// modify cookies for its own site (via JavaScript). 756// TODO(irobert): Implement the cross-site document blocking in 757// http://crbug.com/159215. 758const char kSitePerProcess[] = "site-per-process"; 759 760// Skip gpu info collection, blacklist loading, and blacklist auto-update 761// scheduling at browser startup time. 762// Therefore, all GPU features are available, and about:gpu page shows empty 763// content. The switch is intended only for tests. 764const char kSkipGpuDataLoading[] = "skip-gpu-data-loading"; 765 766// Specifies the request key for the continuous speech recognition webservice. 767const char kSpeechRecognitionWebserviceKey[] = "speech-service-key"; 768 769// Specifies if the |StatsCollectionController| needs to be bound in the 770// renderer. This binding happens on per-frame basis and hence can potentially 771// be a performance bottleneck. One should only enable it when running a test 772// that needs to access the provided statistics. 773const char kStatsCollectionController[] = 774 "enable-stats-collection-bindings"; 775 776// Upscale defaults to "good". 777const char kTabCaptureDownscaleQuality[] = "tab-capture-downscale-quality"; 778 779// Scaling quality for capturing tab. Should be one of "fast", "good" or "best". 780// One flag for upscaling, one for downscaling. 781// Upscale defaults to "best". 782const char kTabCaptureUpscaleQuality[] = "tab-capture-upscale-quality"; 783 784// GestureTapDown events are deferred by this many miillseconds before 785// sending them to the renderer. 786const char kTapDownDeferralTimeMs[] = "tap-down-deferral-time"; 787 788// Allows for forcing socket connections to http/https to use fixed ports. 789const char kTestingFixedHttpPort[] = "testing-fixed-http-port"; 790const char kTestingFixedHttpsPort[] = "testing-fixed-https-port"; 791 792// Runs the security test for the renderer sandbox. 793const char kTestSandbox[] = "test-sandbox"; 794 795// Causes TRACE_EVENT flags to be recorded beginning with shutdown. Optionally, 796// can specify the specific trace categories to include (e.g. 797// --trace-shutdown=base,net) otherwise, all events are recorded. 798// --trace-shutdown-file can be used to control where the trace log gets stored 799// to since there is otherwise no way to access the result. 800const char kTraceShutdown[] = "trace-shutdown"; 801 802// If supplied, sets the file which shutdown tracing will be stored into, if 803// omitted the default will be used "chrometrace.log" in the current directory. 804// Has no effect unless --trace-shutdown is also supplied. 805// Example: --trace-shutdown --trace-shutdown-file=/tmp/trace_event.log 806const char kTraceShutdownFile[] = "trace-shutdown-file"; 807 808// Causes TRACE_EVENT flags to be recorded from startup. Optionally, can 809// specify the specific trace categories to include (e.g. 810// --trace-startup=base,net) otherwise, all events are recorded. Setting this 811// flag results in the first call to BeginTracing() to receive all trace events 812// since startup. In Chrome, you may find --trace-startup-file and 813// --trace-startup-duration to control the auto-saving of the trace (not 814// supported in the base-only TraceLog component). 815const char kTraceStartup[] = "trace-startup"; 816 817// Sets the time in seconds until startup tracing ends. If omitted a default of 818// 5 seconds is used. Has no effect without --trace-startup, or if 819// --startup-trace-file=none was supplied. 820const char kTraceStartupDuration[] = "trace-startup-duration"; 821 822// If supplied, sets the file which startup tracing will be stored into, if 823// omitted the default will be used "chrometrace.log" in the current directory. 824// Has no effect unless --trace-startup is also supplied. 825// Example: --trace-startup --trace-startup-file=/tmp/trace_event.log 826// As a special case, can be set to 'none' - this disables automatically saving 827// the result to a file and the first manually recorded trace will then receive 828// all events since startup. 829const char kTraceStartupFile[] = "trace-startup-file"; 830 831 832 833// Prioritizes the UI's command stream in the GPU process 834extern const char kUIPrioritizeInGpuProcess[] = 835 "ui-prioritize-in-gpu-process"; 836 837// Use fake device for MediaStream to replace actual camera and microphone. 838const char kUseFakeDeviceForMediaStream[] = "use-fake-device-for-media-stream"; 839 840// Bypass the media stream infobar by selecting the default device for media 841// streams (e.g. WebRTC). Works with --use-fake-device-for-media-stream. 842const char kUseFakeUIForMediaStream[] = "use-fake-ui-for-media-stream"; 843 844// Use hardware gpu, if available, for tests. 845const char kUseGpuInTests[] = "use-gpu-in-tests"; 846 847// Set when Chromium should use a mobile user agent. 848const char kUseMobileUserAgent[] = "use-mobile-user-agent"; 849 850// A string used to override the default user agent with a custom one. 851const char kUserAgent[] = "user-agent"; 852 853// On POSIX only: the contents of this flag are prepended to the utility 854// process command line. Useful values might be "valgrind" or "xterm -e gdb 855// --args". 856const char kUtilityCmdPrefix[] = "utility-cmd-prefix"; 857 858// Causes the process to run as a utility subprocess. 859const char kUtilityProcess[] = "utility"; 860 861// The utility process is sandboxed, with access to one directory. This flag 862// specifies the directory that can be accessed. 863const char kUtilityProcessAllowedDir[] = "utility-allowed-dir"; 864 865// Allows MDns to access network in sandboxed process. 866const char kUtilityProcessEnableMDns[] = "utility-enable-mdns"; 867 868// Will add kWaitForDebugger to every child processes. If a value is passed, it 869// will be used as a filter to determine if the child process should have the 870// kWaitForDebugger flag passed on or not. 871const char kWaitForDebuggerChildren[] = "wait-for-debugger-children"; 872 873// Choose which logging channels in WebCore to activate. See 874// Logging.cpp in WebKit's WebCore for a list of available channels. 875const char kWebCoreLogChannels[] = "webcore-log-channels"; 876 877// Causes the process to run as a worker subprocess. 878const char kWorkerProcess[] = "worker"; 879 880// The prefix used when starting the zygote process. (i.e. 'gdb --args') 881const char kZygoteCmdPrefix[] = "zygote-cmd-prefix"; 882 883// Causes the process to run as a renderer zygote. 884const char kZygoteProcess[] = "zygote"; 885 886#if defined(ENABLE_WEBRTC) 887// Disable WebRTC device enumeration. 888const char kDisableDeviceEnumeration[] = "disable-device-enumeration"; 889 890// Disable WebRTC DataChannels SCTP wire protocol support. 891const char kDisableSCTPDataChannels[] = "disable-sctp-data-channels"; 892 893// Disables HW decode acceleration for WebRTC. 894const char kDisableWebRtcHWDecoding[] = "disable-webrtc-hw-decoding"; 895 896// Disables HW encode acceleration for WebRTC. 897const char kDisableWebRtcHWEncoding[] = "disable-webrtc-hw-encoding"; 898 899// Enables WebRTC AEC recordings. 900const char kEnableWebRtcAecRecordings[] = "enable-webrtc-aec-recordings"; 901 902// Enable WebRTC to open TCP server sockets. 903const char kEnableWebRtcTcpServerSocket[] = "enable-webrtc-tcp-server-socket"; 904#endif 905 906#if defined(OS_ANDROID) 907// Disable user gesture requirement for the media element to enter fullscreen. 908const char kDisableGestureRequirementForMediaFullscreen[] = 909 "disable-gesture-requirement-for-media-fullscreen"; 910 911// Disable user gesture requirement for media playback. 912const char kDisableGestureRequirementForMediaPlayback[] = 913 "disable-gesture-requirement-for-media-playback"; 914 915// Disable history logging for media elements. 916const char kDisableMediaHistoryLogging[] = "disable-media-history"; 917 918// Disable overscroll edge effects like those found in Android views. 919const char kDisableOverscrollEdgeEffect[] = "disable-overscroll-edge-effect"; 920 921// WebRTC is enabled by default on Android. 922const char kDisableWebRTC[] = "disable-webrtc"; 923 924// Enable the recognition part of the Web Speech API. 925const char kEnableSpeechRecognition[] = "enable-speech-recognition"; 926 927// Don't display any scrollbars. This is useful for Android WebView where 928// the system manages the scrollbars instead. 929const char kHideScrollbars[] = "hide-scrollbars"; 930 931// The telephony region (ISO country code) to use in phone number detection. 932const char kNetworkCountryIso[] = "network-country-iso"; 933 934// Enables remote debug over HTTP on the specified socket name. 935const char kRemoteDebuggingSocketName[] = "remote-debugging-socket-name"; 936#endif 937 938#if defined(OS_CHROMEOS) 939// Disables panel fitting (used for mirror mode). 940const char kDisablePanelFitting[] = "disable-panel-fitting"; 941#endif 942 943#if defined(OS_MACOSX) && !defined(OS_IOS) 944const char kDisableCarbonInterposing[] = "disable-carbon-interposing"; 945 946// Disables support for Core Animation plugins. This is triggered when 947// accelerated compositing is disabled. See http://crbug.com/122430 . 948const char kDisableCoreAnimationPlugins[] = 949 "disable-core-animation-plugins"; 950 951// Use core animation to draw the RenderWidgetHostView on Mac. 952const char kUseCoreAnimation[] = "use-core-animation"; 953#endif 954 955#if defined(OS_POSIX) 956// Causes the child processes to cleanly exit via calling exit(). 957const char kChildCleanExit[] = "child-clean-exit"; 958#endif 959 960#if defined(USE_AURA) 961// Forces usage of the test compositor. Needed to run ui tests on bots. 962extern const char kTestCompositor[] = "test-compositor"; 963#endif 964 965// Don't dump stuff here, follow the same order as the header. 966 967} // namespace switches 968