content_switches.cc revision c2db58bd994c04d98e4ee2cd7565b71548655fe3
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// Enables the sandboxed processes to run without a job object assigned to them. 14// This flag is required to allow Chrome to run in RemoteApps or Citrix. This 15// flag can reduce the security of the sandboxed processes and allow them to do 16// certain API calls like shut down Windows or access the clipboard. Also we 17// lose the chance to kill some processes until the outer job that owns them 18// finishes. 19const char kAllowNoSandboxJob[] = "allow-no-sandbox-job"; 20 21// Allows debugging of sandboxed processes (see zygote_main_linux.cc). 22const char kAllowSandboxDebugging[] = "allow-sandbox-debugging"; 23 24// Allow compositing on chrome:// pages. 25const char kAllowWebUICompositing[] = "allow-webui-compositing"; 26 27// The same as kAuditHandles except all handles are enumerated. 28const char kAuditAllHandles[] = "enable-handle-auditing-all"; 29 30// Enumerates and prints a child process' most dangerous handles when it 31// is terminated. 32const char kAuditHandles[] = "enable-handle-auditing"; 33 34// Blacklist the GPU for accelerated compositing. 35const char kBlacklistAcceleratedCompositing[] = 36 "blacklist-accelerated-compositing"; 37 38// Blacklist the GPU for WebGL. 39const char kBlacklistWebGL[] = "blacklist-webgl"; 40 41// Causes the browser process to throw an assertion on startup. 42const char kBrowserAssertTest[] = "assert-test"; 43 44// Causes the browser process to crash on startup. 45const char kBrowserCrashTest[] = "crash-test"; 46 47// Path to the exe to run for the renderer and plugin subprocesses. 48const char kBrowserSubprocessPath[] = "browser-subprocess-path"; 49 50// Dumps extra logging about plugin loading to the log file. 51const char kDebugPluginLoading[] = "debug-plugin-loading"; 52 53// Sets the tile size used by composited layers. 54const char kDefaultTileWidth[] = "default-tile-width"; 55const char kDefaultTileHeight[] = "default-tile-height"; 56 57// Disable antialiasing on 2d canvas. 58const char kDisable2dCanvasAntialiasing[] = "disable-canvas-aa"; 59 60// Disables client-visible 3D APIs, in particular WebGL and Pepper 3D. 61// This is controlled by policy and is kept separate from the other 62// enable/disable switches to avoid accidentally regressing the policy 63// support for controlling access to these APIs. 64const char kDisable3DAPIs[] = "disable-3d-apis"; 65 66// Disable gpu-accelerated 2d canvas. 67const char kDisableAccelerated2dCanvas[] = "disable-accelerated-2d-canvas"; 68 69// Disables accelerated compositing. 70const char kDisableAcceleratedCompositing[] = "disable-accelerated-compositing"; 71 72// Disables accelerated compositing for backgrounds of root layers with 73// background-attachment: fixed. 74const char kDisableAcceleratedFixedRootBackground[] = 75 "disable-accelerated-fixed-root-background"; 76 77// Disables the hardware acceleration of 3D CSS and animation. 78const char kDisableAcceleratedLayers[] = "disable-accelerated-layers"; 79 80// Disables accelerated compositing for overflow scroll. 81const char kDisableAcceleratedOverflowScroll[] = 82 "disable-accelerated-overflow-scroll"; 83 84// Disables the hardware acceleration of plugins. 85const char kDisableAcceleratedPlugins[] = "disable-accelerated-plugins"; 86 87// Disables GPU accelerated video display. 88const char kDisableAcceleratedVideo[] = "disable-accelerated-video"; 89 90// Disables hardware acceleration of video decode, where available. 91const char kDisableAcceleratedVideoDecode[] = 92 "disable-accelerated-video-decode"; 93 94// Disables the alternate window station for the renderer. 95const char kDisableAltWinstation[] = "disable-winsta"; 96 97// Disable the ApplicationCache. 98const char kDisableApplicationCache[] = "disable-application-cache"; 99// 100// TODO(scherkus): remove --disable-audio when we have a proper fallback 101// mechanism. 102const char kDisableAudio[] = "disable-audio"; 103 104// Disable limits on the number of backing stores. Can prevent blinking for 105// users with many windows/tabs and lots of memory. 106const char kDisableBackingStoreLimit[] = "disable-backing-store-limit"; 107 108// Enables browser plugin compositing experiment. 109const char kDisableBrowserPluginCompositing[] = 110 "disable-browser-plugin-compositing"; 111 112// See comment for kEnableCompositingForFixedPosition. 113const char kDisableCompositingForFixedPosition[] = 114 "disable-fixed-position-compositing"; 115 116// See comment for kEnableCompositingForTransition. 117const char kDisableCompositingForTransition[] = 118 "disable-transition-compositing"; 119 120// Disables HTML5 DB support. 121const char kDisableDatabases[] = "disable-databases"; 122 123// Disables delegated renderer. 124const char kDisableDelegatedRenderer[] = "disable-delegated-renderer"; 125 126// Disables desktop notifications (default enabled on windows). 127const char kDisableDesktopNotifications[] = "disable-desktop-notifications"; 128 129// Disables device orientation events. 130const char kDisableDeviceOrientation[] = "disable-device-orientation"; 131 132// Disable experimental WebGL support. 133const char kDisableExperimentalWebGL[] = "disable-webgl"; 134 135// Disable FileSystem API. 136const char kDisableFileSystem[] = "disable-file-system"; 137 138const char kDisableFixedPositionCreatesStackingContext[] 139 = "disable-fixed-position-creates-stacking-context"; 140 141// Disable 3D inside of flapper. 142const char kDisableFlash3d[] = "disable-flash-3d"; 143 144// Disable Stage3D inside of flapper. 145const char kDisableFlashStage3d[] = "disable-flash-stage3d"; 146 147// This flag disables force compositing mode and prevents it from being enabled 148// via field trials. 149const char kDisableForceCompositingMode[] = "disable-force-compositing-mode"; 150 151// Disable the JavaScript Full Screen API. 152const char kDisableFullScreen[] = "disable-fullscreen"; 153 154// Suppresses support for the Geolocation javascript API. 155const char kDisableGeolocation[] = "disable-geolocation"; 156 157const char kDisableGestureTapHighlight[] = "disable-gesture-tap-highlight"; 158 159// Disable GL multisampling. 160const char kDisableGLMultisampling[] = "disable-gl-multisampling"; 161 162// Disables GPU hardware acceleration. If software renderer is not in place, 163// then the GPU process won't launch. 164const char kDisableGpu[] = "disable-gpu"; 165 166// Prevent the compositor from using its GPU implementation. 167const char kDisableGpuCompositing[] = "disable-gpu-compositing"; 168 169// Do not launch the GPU process shortly after browser process launch. Instead 170// launch it when it is first needed. 171const char kDisableGpuProcessPrelaunch[] = "disable-gpu-process-prelaunch"; 172 173// Disable the GPU process sandbox. 174const char kDisableGpuSandbox[] = "disable-gpu-sandbox"; 175 176// Disable the thread that crashes the GPU process if it stops responding to 177// messages. 178const char kDisableGpuWatchdog[] = "disable-gpu-watchdog"; 179 180// Suppresses hang monitor dialogs in renderer processes. This may allow slow 181// unload handlers on a page to prevent the tab from closing, but the Task 182// Manager can be used to terminate the offending process in this case. 183const char kDisableHangMonitor[] = "disable-hang-monitor"; 184 185// Disable the RenderThread's HistogramCustomizer. 186const char kDisableHistogramCustomizer[] = "disable-histogram-customizer"; 187 188// Disables HTML-based desktop notifications. 189const char kDisableHTMLNotifications[] = "disable-html-notifications"; 190 191// Disable the use of an ImageTransportSurface. This means the GPU process 192// will present the rendered page rather than the browser process. 193const char kDisableImageTransportSurface[] = "disable-image-transport-surface"; 194 195// Prevent Java from running. 196const char kDisableJava[] = "disable-java"; 197 198// Don't execute JavaScript (browser JS like the new tab page still runs). 199const char kDisableJavaScript[] = "disable-javascript"; 200 201// Disables prefixed Encrypted Media API (e.g. webkitGenerateKeyRequest()). 202const char kDisableLegacyEncryptedMedia[] = "disable-legacy-encrypted-media"; 203 204// Disable LocalStorage. 205const char kDisableLocalStorage[] = "disable-local-storage"; 206 207// Force logging to be disabled. Logging is enabled by default in debug 208// builds. 209const char kDisableLogging[] = "disable-logging"; 210 211// Disable Pepper3D. 212const char kDisablePepper3d[] = "disable-pepper-3d"; 213 214// Disables compositor-accelerated touch-screen pinch gestures. 215const char kDisablePinch[] = "disable-pinch"; 216 217// Prevent plugins from running. 218const char kDisablePlugins[] = "disable-plugins"; 219 220// Disable discovering third-party plug-ins. Effectively loading only 221// ones shipped with the browser plus third-party ones as specified by 222// --extra-plugin-dir and --load-plugin switches. 223const char kDisablePluginsDiscovery[] = "disable-plugins-discovery"; 224 225// Disables remote web font support. SVG font should always work whether this 226// option is specified or not. 227const char kDisableRemoteFonts[] = "disable-remote-fonts"; 228 229// Turns off the accessibility in the renderer. 230const char kDisableRendererAccessibility[] = "disable-renderer-accessibility"; 231 232// Disable the seccomp filter sandbox (seccomp-bpf) (Linux only). 233const char kDisableSeccompFilterSandbox[] = "disable-seccomp-filter-sandbox"; 234 235// Disable session storage. 236const char kDisableSessionStorage[] = "disable-session-storage"; 237 238// Disable the setuid sandbox (Linux only). 239const char kDisableSetuidSandbox[] = "disable-setuid-sandbox"; 240 241// Enable shared workers. Functionality not yet complete. 242const char kDisableSharedWorkers[] = "disable-shared-workers"; 243 244// Disables site-specific tailoring to compatibility issues in WebKit. 245const char kDisableSiteSpecificQuirks[] = "disable-site-specific-quirks"; 246 247// Disable smooth scrolling for testing. 248const char kDisableSmoothScrolling[] = "disable-smooth-scrolling"; 249 250// Disables the use of a 3D software rasterizer. 251const char kDisableSoftwareRasterizer[] = "disable-software-rasterizer"; 252 253// Disables speech input. 254const char kDisableSpeechInput[] = "disable-speech-input"; 255 256// Disable False Start in SSL and TLS connections. 257const char kDisableSSLFalseStart[] = "disable-ssl-false-start"; 258 259// Disable multithreaded GPU compositing of web content. 260const char kDisableThreadedCompositing[] = "disable-threaded-compositing"; 261 262// Disables the threaded HTML parser in WebKit 263const char kDisableThreadedHTMLParser[] = "disable-threaded-html-parser"; 264 265// Disable web audio API. 266const char kDisableWebAudio[] = "disable-webaudio"; 267 268// Disables prefixed Media Source API (i.e., the WebKitMediaSource object). 269const char kDisableWebKitMediaSource[] = "disable-webkit-media-source"; 270 271// Don't enforce the same-origin policy. (Used by people testing their sites.) 272const char kDisableWebSecurity[] = "disable-web-security"; 273 274// Disables WebKit's XSSAuditor. The XSSAuditor mitigates reflective XSS. 275const char kDisableXSSAuditor[] = "disable-xss-auditor"; 276 277// Specifies if the |DOMAutomationController| needs to be bound in the 278// renderer. This binding happens on per-frame basis and hence can potentially 279// be a performance bottleneck. One should only enable it when automating dom 280// based tests. 281const char kDomAutomationController[] = "dom-automation"; 282 283// Enable gpu-accelerated SVG/W3C filters. 284const char kEnableAcceleratedFilters[] = "enable-accelerated-filters"; 285 286// Enables accelerated compositing for backgrounds of root layers with 287// background-attachment: fixed. Requires kForceCompositingMode. 288const char kEnableAcceleratedFixedRootBackground[] = 289 "enable-accelerated-fixed-root-background"; 290 291// Enables accelerated compositing for overflow scroll. Promotes eligible 292// overflow:scroll elements to layers to enable accelerated scrolling for them. 293const char kEnableAcceleratedOverflowScroll[] = 294 "enable-accelerated-overflow-scroll"; 295 296// Enables accelerated compositing for scrollable frames for accelerated 297// scrolling for them. Requires kForceCompositingMode. 298const char kEnableAcceleratedScrollableFrames[] = 299 "enable-accelerated-scrollable-frames"; 300 301// Turns on extremely verbose logging of accessibility events. 302const char kEnableAccessibilityLogging[] = "enable-accessibility-logging"; 303 304// Enable notifications of audible/silent audio output from a render view. 305// 306// TODO(miu): Remove --enable-audible-notifications once the feature goes 307// live. http://crbug.com/178934 308const char kEnableAudibleNotifications[] = "enable-audible-notifications"; 309 310// Use a begin frame signal from browser to renderer to schedule rendering. 311const char kEnableBeginFrameScheduling[] = "enable-begin-frame-scheduling"; 312 313// Synchronize delivery and response of input events to and from the renderer. 314const char kEnableBrowserInputController[] = "enable-browser-input-controller"; 315 316// Enables browser plugin for all types of pages. 317const char kEnableBrowserPluginForAllViewTypes[] = 318 "enable-browser-plugin-for-all-view-types"; 319 320// Enables Drag and Drop into and out of Browser Plugin. 321// kEnableBrowserPluginGuestViews must also be set at this time. 322const char kEnableBrowserPluginDragDrop[] = "enable-browser-plugin-drag-drop"; 323 324// Enables accelerated scrolling by the compositor for frames. Requires 325// kForceCompositingMode and kEnableAcceleratedScrollableFrames. 326const char kEnableCompositedScrollingForFrames[] = 327 "enable-composited-scrolling-for-frames"; 328 329// Enable the creation of compositing layers for fixed position 330// elements. Three options are needed to support four possible scenarios: 331// 1. Default (disabled) 332// 2. Enabled always (to allow dogfooding) 333// 3. Disabled always (to give safety fallback for users) 334// 4. Enabled only if we detect a highDPI display 335// 336// Option #4 may soon be the default, because the feature is needed soon for 337// high DPI, but cannot be used (yet) for low DPI. Options #2 and #3 will 338// override Option #4. 339const char kEnableCompositingForFixedPosition[] = 340 "enable-fixed-position-compositing"; 341 342// Enable/Disable the creation of compositing layers for RenderLayers with a 343// transition on a property that supports accelerated animation (that is, 344// opacity, -webkit-transform, and -webkit-filter), even when no animation is 345// running. These options allow for three possible scenarios: 346// 1. Default (enabled only if we dectect a highDPI display) 347// 2. Enabled always. 348// 3. Disabled always. 349const char kEnableCompositingForTransition[] = 350 "enable-transition-compositing"; 351 352// Enables CSS3 custom filters 353const char kEnableCssShaders[] = "enable-css-shaders"; 354 355// Defer image decoding in WebKit until painting. 356const char kEnableDeferredImageDecoding[] = "enable-deferred-image-decoding"; 357 358// Enables delegated renderer. 359const char kEnableDelegatedRenderer[] = "enable-delegated-renderer"; 360 361// Enables device motion events. 362const char kEnableDeviceMotion[] = "enable-device-motion"; 363 364// Enables restarting interrupted downloads. 365const char kEnableDownloadResumption[] = "enable-download-resumption"; 366 367// Enables support for Encrypted Media Extensions (e.g. MediaKeys). 368const char kEnableEncryptedMedia[] = "enable-encrypted-media"; 369 370// Enable experimental canvas features, e.g. canvas 2D context attributes 371const char kEnableExperimentalCanvasFeatures[] = 372 "enable-experimental-canvas-features"; 373 374// Enables Web Platform features that are in development. 375const char kEnableExperimentalWebPlatformFeatures[] = 376 "enable-experimental-web-platform-features"; 377 378// Enable an experimental WebSocket implementation. 379const char kEnableExperimentalWebSocket[] = "enable-experimental-websocket"; 380 381// By default, a page is laid out to fill the entire width of the window. 382// This flag fixes the layout of the page to a default of 980 CSS pixels, 383// or to a specified width and height using --enable-fixed-layout=w,h 384const char kEnableFixedLayout[] = "enable-fixed-layout"; 385 386const char kEnableFixedPositionCreatesStackingContext[] 387 = "enable-fixed-position-creates-stacking-context"; 388 389// Enable Gesture Tap Highlight 390const char kEnableGestureTapHighlight[] = "enable-gesture-tap-highlight"; 391 392// Enables the GPU benchmarking extension 393const char kEnableGpuBenchmarking[] = "enable-gpu-benchmarking"; 394 395// Enables TRACE for GL calls in the renderer. 396const char kEnableGpuClientTracing[] = "enable-gpu-client-tracing"; 397 398// See comment for kEnableCompositingForFixedPosition. 399const char kEnableHighDpiCompositingForFixedPosition[] = 400 "enable-high-dpi-fixed-position-compositing"; 401 402// Enable HTML Imports 403extern const char kEnableHTMLImports[] = "enable-html-imports"; 404 405// Enables support for inband text tracks in media content. 406const char kEnableInbandTextTracks[] = "enable-inband-text-tracks"; 407 408// Force logging to be enabled. Logging is disabled by default in release 409// builds. 410const char kEnableLogging[] = "enable-logging"; 411 412// Enables the memory benchmarking extension 413const char kEnableMemoryBenchmarking[] = "enable-memory-benchmarking"; 414 415// On Windows, converts the page to the currently-installed monitor profile. 416// This does NOT enable color management for images. The source is still 417// assumed to be sRGB. 418const char kEnableMonitorProfile[] = "enable-monitor-profile"; 419 420// Enables the new chrome://media-internals page. 421// http://crbug.com/260005 422const char kEnableNewMediaInternals[] = "enable-new-media-internals"; 423 424// Enables use of cache if offline, even if it's stale 425const char kEnableOfflineCacheAccess[] = "enable-offline-cache-access"; 426 427// Enables overlay scrollbars on Aura or Linux. Does nothing on Mac. 428const char kEnableOverlayScrollbars[] = "enable-overlay-scrollbars"; 429 430// Forward overscroll event data from the renderer to the browser. 431const char kEnableOverscrollNotifications[] = "enable-overscroll-notifications"; 432 433// Enables compositor-accelerated touch-screen pinch gestures. 434const char kEnablePinch[] = "enable-pinch"; 435 436// Enable caching of pre-parsed JS script data. See http://crbug.com/32407. 437const char kEnablePreparsedJsCaching[] = "enable-preparsed-js-caching"; 438 439// Enable privileged WebGL extensions; without this switch such extensions are 440// available only to Chrome extensions. 441const char kEnablePrivilegedWebGLExtensions[] = 442 "enable-privileged-webgl-extensions"; 443 444// Aggressively free GPU command buffers belonging to hidden tabs. 445const char kEnablePruneGpuCommandBuffers[] = 446 "enable-prune-gpu-command-buffers"; 447 448// Enables the CSS multicol implementation that uses the regions implementation. 449const char kEnableRegionBasedColumns[] = 450 "enable-region-based-columns"; 451 452// Cause the OS X sandbox write to syslog every time an access to a resource 453// is denied by the sandbox. 454const char kEnableSandboxLogging[] = "enable-sandbox-logging"; 455 456// Enables the Skia benchmarking extension 457const char kEnableSkiaBenchmarking[] = "enable-skia-benchmarking"; 458 459// On platforms that support it, enables smooth scroll animation. 460const char kEnableSmoothScrolling[] = "enable-smooth-scrolling"; 461 462// Allow the compositor to use its software implementation if GL fails. 463const char kEnableSoftwareCompositing[] = "enable-software-compositing"; 464 465// Enable spatial navigation 466const char kEnableSpatialNavigation[] = "enable-spatial-navigation"; 467 468// Enables the synthesis part of the Web Speech API. 469const char kEnableSpeechSynthesis[] = "enable-speech-synthesis"; 470 471// Enables TLS cached info extension. 472const char kEnableSSLCachedInfo[] = "enable-ssl-cached-info"; 473 474// Enables StatsTable, logging statistics to a global named shared memory table. 475const char kEnableStatsTable[] = "enable-stats-table"; 476 477// Experimentally ensures that each renderer process: 478// 1) Only handles rendering for pages from a single site, apart from iframes. 479// (Note that a page can reference content from multiple origins due to images, 480// JavaScript files, etc. Cross-site iframes are also loaded in-process.) 481// 2) Only has authority to see or use cookies for the page's top-level origin. 482// (So if a.com iframes b.com, the b.com network request will be sent without 483// cookies.) 484// This is expected to break compatibility with many pages for now. Unlike the 485// --site-per-process flag, this allows cross-site iframes, but it blocks all 486// cookies on cross-site requests. 487const char kEnableStrictSiteIsolation[] = "enable-strict-site-isolation"; 488 489// Enable use of experimental TCP sockets API for sending data in the 490// SYN packet. 491const char kEnableTcpFastOpen[] = "enable-tcp-fastopen"; 492 493// Enable Text Service Framework(TSF) for text inputting instead of IMM32. This 494// flag is ignored on Metro environment. 495const char kEnableTextServicesFramework[] = "enable-text-services-framework"; 496 497// Enable multithreaded GPU compositing of web content. 498const char kEnableThreadedCompositing[] = "enable-threaded-compositing"; 499 500// Enable screen capturing support for MediaStream API. 501const char kEnableUserMediaScreenCapturing[] = 502 "enable-usermedia-screen-capturing"; 503 504// Enables the use of the viewport meta tag, which allows 505// pages to control aspects of their own layout. This also turns on touch-screen 506// pinch gestures. 507const char kEnableViewport[] = "enable-viewport"; 508 509// Allow GL contexts to be automatically virtualized (shared between command 510// buffer clients) if they are compatible. 511const char kEnableVirtualGLContexts[] = "enable-virtual-gl-contexts"; 512 513// Enables moving cursor by word in visual order. 514const char kEnableVisualWordMovement[] = "enable-visual-word-movement"; 515 516// Enable the Vtune profiler support. 517const char kEnableVtune[] = "enable-vtune-support"; 518 519// Enable CSS Transitions / Animations on the Web Animations model. 520const char kEnableWebAnimationsCSS[] = "enable-web-animations-css"; 521 522// Enable SVG Animations on the Web Animations model. 523const char kEnableWebAnimationsSVG[] = "enable-web-animations-svg"; 524 525// Enables WebGL extensions not yet approved by the community. 526const char kEnableWebGLDraftExtensions[] = "enable-webgl-draft-extensions"; 527 528// Enables Web MIDI API. 529const char kEnableWebMIDI[] = "enable-web-midi"; 530 531// Enable WebRTC to open TCP server sockets. 532const char kEnableWebRtcTcpServerSocket[] = "enable-webrtc-tcp-server-socket"; 533 534// Enables experimental features for the geolocation API. 535// Current features: 536// - CoreLocation support for Mac OS X 10.6 537const char kExperimentalLocationFeatures[] = "experimental-location-features"; 538 539// Load NPAPI plugins from the specified directory. 540const char kExtraPluginDir[] = "extra-plugin-dir"; 541 542// If accelerated compositing is supported, always enter compositing mode for 543// the base layer even when compositing is not strictly required. 544const char kForceCompositingMode[] = "force-compositing-mode"; 545 546// Some field trials may be randomized in the browser, and the randomly selected 547// outcome needs to be propagated to the renderer. For instance, this is used 548// to modify histograms recorded in the renderer, or to get the renderer to 549// also set of its state (initialize, or not initialize components) to match the 550// experiment(s). The option is also useful for forcing field trials when 551// testing changes locally. The argument is a list of name and value pairs, 552// separated by slashes. See FieldTrialList::CreateTrialsFromString() in 553// field_trial.h for details. 554const char kForceFieldTrials[] = "force-fieldtrials"; 555 556// Force renderer accessibility to be on instead of enabling it on demand when 557// a screen reader is detected. The disable-renderer-accessibility switch 558// overrides this if present. 559const char kForceRendererAccessibility[] = "force-renderer-accessibility"; 560 561// Passes gpu device_id from browser process to GPU process. 562const char kGpuDeviceID[] = "gpu-device-id"; 563 564// Passes gpu driver_vendor from browser process to GPU process. 565const char kGpuDriverVendor[] = "gpu-driver-vendor"; 566 567// Passes gpu driver_version from browser process to GPU process. 568const char kGpuDriverVersion[] = "gpu-driver-version"; 569 570// Extra command line options for launching the GPU process (normally used 571// for debugging). Use like renderer-cmd-prefix. 572const char kGpuLauncher[] = "gpu-launcher"; 573 574// Makes this process a GPU sub-process. 575const char kGpuProcess[] = "gpu-process"; 576 577// Allow shmat system call in GPU sandbox. 578const char kGpuSandboxAllowSysVShm[] = "gpu-sandbox-allow-sysv-shm"; 579 580// Causes the GPU process to display a dialog on launch. 581const char kGpuStartupDialog[] = "gpu-startup-dialog"; 582 583// Passes gpu vendor_id from browser process to GPU process. 584const char kGpuVendorID[] = "gpu-vendor-id"; 585 586// These mappings only apply to the host resolver. 587const char kHostResolverRules[] = "host-resolver-rules"; 588 589// Ignores certificate-related errors. 590const char kIgnoreCertificateErrors[] = "ignore-certificate-errors"; 591 592// Ignores GPU blacklist. 593const char kIgnoreGpuBlacklist[] = "ignore-gpu-blacklist"; 594 595// Run the GPU process as a thread in the browser process. 596const char kInProcessGPU[] = "in-process-gpu"; 597 598// Runs plugins inside the renderer process 599const char kInProcessPlugins[] = "in-process-plugins"; 600 601// Specifies the flags passed to JS engine 602const char kJavaScriptFlags[] = "js-flags"; 603 604// Load an NPAPI plugin from the specified path. 605const char kLoadPlugin[] = "load-plugin"; 606 607// Sets the minimum log level. Valid values are from 0 to 3: 608// INFO = 0, WARNING = 1, LOG_ERROR = 2, LOG_FATAL = 3. 609const char kLoggingLevel[] = "log-level"; 610 611// Enables displaying net log events on the command line, or writing the events 612// to a separate file if a file name is given. 613const char kLogNetLog[] = "log-net-log"; 614 615// Make plugin processes log their sent and received messages to VLOG(1). 616const char kLogPluginMessages[] = "log-plugin-messages"; 617 618// Sets the width and height above which a composited layer will get tiled. 619const char kMaxUntiledLayerHeight[] = "max-untiled-layer-height"; 620const char kMaxUntiledLayerWidth[] = "max-untiled-layer-width"; 621 622// Sample memory usage with high frequency and store the results to the 623// Renderer.Memory histogram. Used in memory tests. 624const char kMemoryMetrics[] = "memory-metrics"; 625 626// Mutes audio sent to the audio device so it is not audible during 627// automated testing. 628const char kMuteAudio[] = "mute-audio"; 629 630// Don't send HTTP-Referer headers. 631const char kNoReferrers[] = "no-referrers"; 632 633// Disables the sandbox for all process types that are normally sandboxed. 634const char kNoSandbox[] = "no-sandbox"; 635 636// Enables or disables history navigation in response to horizontal overscroll. 637// Set the value to '1' to enable the feature, and set to '0' to disable. 638// Defaults to enabled. 639const char kOverscrollHistoryNavigation[] = 640 "overscroll-history-navigation"; 641 642// Specifies a command that should be used to launch the plugin process. Useful 643// for running the plugin process through purify or quantify. Ex: 644// --plugin-launcher="path\to\purify /Run=yes" 645const char kPluginLauncher[] = "plugin-launcher"; 646 647// Tells the plugin process the path of the plugin to load 648const char kPluginPath[] = "plugin-path"; 649 650// Causes the process to run as a plugin subprocess. 651const char kPluginProcess[] = "plugin"; 652 653// Causes the plugin process to display a dialog on launch. 654const char kPluginStartupDialog[] = "plugin-startup-dialog"; 655 656// Argument to the process type that indicates a PPAPI broker process type. 657const char kPpapiBrokerProcess[] = "ppapi-broker"; 658 659// "Command-line" arguments for the PPAPI Flash; used for debugging options. 660const char kPpapiFlashArgs[] = "ppapi-flash-args"; 661 662// Runs PPAPI (Pepper) plugins in-process. 663const char kPpapiInProcess[] = "ppapi-in-process"; 664 665// Like kPluginLauncher for PPAPI plugins. 666const char kPpapiPluginLauncher[] = "ppapi-plugin-launcher"; 667 668// Argument to the process type that indicates a PPAPI plugin process type. 669const char kPpapiPluginProcess[] = "ppapi"; 670 671// Causes the PPAPI sub process to display a dialog on launch. Be sure to use 672// --no-sandbox as well or the sandbox won't allow the dialog to display. 673const char kPpapiStartupDialog[] = "ppapi-startup-dialog"; 674 675// Runs a single process for each site (i.e., group of pages from the same 676// registered domain) the user visits. We default to using a renderer process 677// for each site instance (i.e., group of pages from the same registered 678// domain with script connections to each other). 679const char kProcessPerSite[] = "process-per-site"; 680 681// Runs each set of script-connected tabs (i.e., a BrowsingInstance) in its own 682// renderer process. We default to using a renderer process for each 683// site instance (i.e., group of pages from the same registered domain with 684// script connections to each other). 685const char kProcessPerTab[] = "process-per-tab"; 686 687// The value of this switch determines whether the process is started as a 688// renderer or plugin host. If it's empty, it's the browser. 689const char kProcessType[] = "type"; 690 691// Reduces the GPU process sandbox to be less strict. 692const char kReduceGpuSandbox[] = "reduce-gpu-sandbox"; 693 694// Register Pepper plugins (see pepper_plugin_registry.cc for its format). 695const char kRegisterPepperPlugins[] = "register-pepper-plugins"; 696 697 698// Enables remote debug over HTTP on the specified port. 699const char kRemoteDebuggingPort[] = "remote-debugging-port"; 700 701// Causes the renderer process to throw an assertion on launch. 702const char kRendererAssertTest[] = "renderer-assert-test"; 703 704// On POSIX only: the contents of this flag are prepended to the renderer 705// command line. Useful values might be "valgrind" or "xterm -e gdb --args". 706const char kRendererCmdPrefix[] = "renderer-cmd-prefix"; 707 708// Causes the process to run as renderer instead of as browser. 709const char kRendererProcess[] = "renderer"; 710 711// Overrides the default/calculated limit to the number of renderer processes. 712// Very high values for this setting can lead to high memory/resource usage 713// or instability. 714const char kRendererProcessLimit[] = "renderer-process-limit"; 715 716// Causes the renderer process to display a dialog on launch. 717const char kRendererStartupDialog[] = "renderer-startup-dialog"; 718 719// Enables or disables scroll end effect in response to vertical overscroll. 720// Set the value to '1' to enable the feature, and set to '0' to disable. 721// Defaults to disabled. 722const char kScrollEndEffect[] = "scroll-end-effect"; 723 724// Visibly render a border around paint rects in the web page to help debug 725// and study painting behavior. 726const char kShowPaintRects[] = "show-paint-rects"; 727 728// Map mouse input events into touch gesture events. Useful for debugging touch 729// gestures without needing a touchscreen. 730const char kSimulateTouchScreenWithMouse[] = 731 "simulate-touch-screen-with-mouse"; 732 733// Runs the renderer and plugins in the same process as the browser 734const char kSingleProcess[] = "single-process"; 735 736// Experimentally enforces a one-site-per-process security policy. 737// All cross-site navigations force process swaps, and we can restrict a 738// renderer process's access rights based on its site. For details, see: 739// http://www.chromium.org/developers/design-documents/site-isolation 740// 741// Unlike --enable-strict-site-isolation (which allows cross-site iframes), 742// this flag blocks cross-site documents even in iframes, until out-of-process 743// iframe support is available. Cross-site network requests do attach the 744// normal set of cookies, but a renderer process is only allowed to view or 745// modify cookies for its own site (via JavaScript). 746// TODO(irobert): Implement the cross-site document blocking in 747// http://crbug.com/159215. 748const char kSitePerProcess[] = "site-per-process"; 749 750// Skip gpu info collection, blacklist loading, and blacklist auto-update 751// scheduling at browser startup time. 752// Therefore, all GPU features are available, and about:gpu page shows empty 753// content. The switch is intended only for tests. 754const char kSkipGpuDataLoading[] = "skip-gpu-data-loading"; 755 756// Specifies the request key for the continuous speech recognition webservice. 757const char kSpeechRecognitionWebserviceKey[] = "speech-service-key"; 758 759// Specifies if the |StatsCollectionController| needs to be bound in the 760// renderer. This binding happens on per-frame basis and hence can potentially 761// be a performance bottleneck. One should only enable it when running a test 762// that needs to access the provided statistics. 763const char kStatsCollectionController[] = 764 "enable-stats-collection-bindings"; 765 766// Upscale defaults to "good". 767const char kTabCaptureDownscaleQuality[] = "tab-capture-downscale-quality"; 768 769// Scaling quality for capturing tab. Should be one of "fast", "good" or "best". 770// One flag for upscaling, one for downscaling. 771// Upscale defaults to "best". 772const char kTabCaptureUpscaleQuality[] = "tab-capture-upscale-quality"; 773 774// GestureTapDown events are deferred by this many miillseconds before 775// sending them to the renderer. 776const char kTapDownDeferralTimeMs[] = "tap-down-deferral-time"; 777 778// Allows for forcing socket connections to http/https to use fixed ports. 779const char kTestingFixedHttpPort[] = "testing-fixed-http-port"; 780const char kTestingFixedHttpsPort[] = "testing-fixed-https-port"; 781 782// Runs the security test for the renderer sandbox. 783const char kTestSandbox[] = "test-sandbox"; 784 785// Causes TRACE_EVENT flags to be recorded from startup. Optionally, can 786// specify the specific trace categories to include (e.g. 787// --trace-startup=base,net) otherwise, all events are recorded. Setting this 788// flag results in the first call to BeginTracing() to receive all trace events 789// since startup. In Chrome, you may find --trace-startup-file and 790// --trace-startup-duration to control the auto-saving of the trace (not 791// supported in the base-only TraceLog component). 792const char kTraceStartup[] = "trace-startup"; 793 794// Sets the time in seconds until startup tracing ends. If omitted a default of 795// 5 seconds is used. Has no effect without --trace-startup, or if 796// --startup-trace-file=none was supplied. 797const char kTraceStartupDuration[] = "trace-startup-duration"; 798 799// If supplied, sets the file which startup tracing will be stored into, if 800// omitted the default will be used "chrometrace.log" in the current directory. 801// Has no effect unless --trace-startup is also supplied. 802// Example: --trace-startup --trace-startup-file=/tmp/trace_event.log 803// As a special case, can be set to 'none' - this disables automatically saving 804// the result to a file and the first manually recorded trace will then receive 805// all events since startup. 806const char kTraceStartupFile[] = "trace-startup-file"; 807 808 809 810// Prioritizes the UI's command stream in the GPU process 811extern const char kUIPrioritizeInGpuProcess[] = 812 "ui-prioritize-in-gpu-process"; 813 814// Use fake device for MediaStream to replace actual camera and microphone. 815const char kUseFakeDeviceForMediaStream[] = "use-fake-device-for-media-stream"; 816 817// Bypass the media stream infobar by selecting the default device for media 818// streams (e.g. WebRTC). Works with --use-fake-device-for-media-stream. 819const char kUseFakeUIForMediaStream[] = "use-fake-ui-for-media-stream"; 820 821// Use hardware gpu, if available, for tests. 822const char kUseGpuInTests[] = "use-gpu-in-tests"; 823 824// Set when Chromium should use a mobile user agent. 825const char kUseMobileUserAgent[] = "use-mobile-user-agent"; 826 827// A string used to override the default user agent with a custom one. 828const char kUserAgent[] = "user-agent"; 829 830// On POSIX only: the contents of this flag are prepended to the utility 831// process command line. Useful values might be "valgrind" or "xterm -e gdb 832// --args". 833const char kUtilityCmdPrefix[] = "utility-cmd-prefix"; 834 835// Causes the process to run as a utility subprocess. 836const char kUtilityProcess[] = "utility"; 837 838// The utility process is sandboxed, with access to one directory. This flag 839// specifies the directory that can be accessed. 840const char kUtilityProcessAllowedDir[] = "utility-allowed-dir"; 841 842// Allows MDns to access network in sandboxed process. 843const char kUtilityProcessEnableMDns[] = "utility-enable-mdns"; 844 845// Will add kWaitForDebugger to every child processes. If a value is passed, it 846// will be used as a filter to determine if the child process should have the 847// kWaitForDebugger flag passed on or not. 848const char kWaitForDebuggerChildren[] = "wait-for-debugger-children"; 849 850// Choose which logging channels in WebCore to activate. See 851// Logging.cpp in WebKit's WebCore for a list of available channels. 852const char kWebCoreLogChannels[] = "webcore-log-channels"; 853 854// Causes the process to run as a worker subprocess. 855const char kWorkerProcess[] = "worker"; 856 857// The prefix used when starting the zygote process. (i.e. 'gdb --args') 858const char kZygoteCmdPrefix[] = "zygote-cmd-prefix"; 859 860// Causes the process to run as a renderer zygote. 861const char kZygoteProcess[] = "zygote"; 862 863#if defined(ENABLE_WEBRTC) 864// Disable WebRTC device enumeration. 865const char kDisableDeviceEnumeration[] = "disable-device-enumeration"; 866 867// Enable WebRTC DataChannels SCTP wire protocol support. 868const char kEnableSCTPDataChannels[] = "enable-sctp-data-channels"; 869 870// Enables WebRTC AEC recordings. 871const char kEnableWebRtcAecRecordings[] = "enable-webrtc-aec-recordings"; 872 873// Enables HW decode acceleration for WebRTC. 874const char kEnableWebRtcHWDecoding[] = "enable-webrtc-hw-decoding"; 875 876#endif 877 878#if defined(OS_ANDROID) 879// Disables device motion events. 880const char kDisableDeviceMotion[] = "disable-device-motion"; 881 882// Disable user gesture requirement for media playback. 883const char kDisableGestureRequirementForMediaPlayback[] = 884 "disable-gesture-requirement-for-media-playback"; 885 886// Disable history logging for media elements. 887const char kDisableMediaHistoryLogging[] = "disable-media-history"; 888 889// Disable overscroll edge effects like those found in Android views. 890const char kDisableOverscrollEdgeEffect[] = "disable-overscroll-edge-effect"; 891 892// WebRTC is enabled by default on Android. 893const char kDisableWebRTC[] = "disable-webrtc"; 894 895// Enable the recognition part of the Web Speech API. 896const char kEnableSpeechRecognition[] = "enable-speech-recognition"; 897 898// Don't display any scrollbars. This is useful for Android WebView where 899// the system manages the scrollbars instead. 900const char kHideScrollbars[] = "hide-scrollbars"; 901 902// The telephony region (ISO country code) to use in phone number detection. 903const char kNetworkCountryIso[] = "network-country-iso"; 904 905// Enables remote debug over HTTP on the specified socket name. 906const char kRemoteDebuggingSocketName[] = "remote-debugging-socket-name"; 907#endif 908 909#if defined(OS_CHROMEOS) 910// Disables panel fitting (used for mirror mode). 911const char kDisablePanelFitting[] = "disable-panel-fitting"; 912#endif 913 914#if defined(OS_MACOSX) && !defined(OS_IOS) 915const char kDisableCarbonInterposing[] = "disable-carbon-interposing"; 916 917// Disables support for Core Animation plugins. This is triggered when 918// accelerated compositing is disabled. See http://crbug.com/122430 . 919const char kDisableCoreAnimationPlugins[] = 920 "disable-core-animation-plugins"; 921 922// Use core animation to draw the RenderWidgetHostView on Mac. 923const char kUseCoreAnimation[] = "use-core-animation"; 924#endif 925 926#if defined(OS_POSIX) 927// Causes the child processes to cleanly exit via calling exit(). 928const char kChildCleanExit[] = "child-clean-exit"; 929#endif 930 931#if defined(USE_AURA) 932// Forces usage of the test compositor. Needed to run ui tests on bots. 933extern const char kTestCompositor[] = "test-compositor"; 934#endif 935 936// Don't dump stuff here, follow the same order as the header. 937 938// Allows filters (SkImageFilter objects) to be sent between processes over IPC 939const char kAllowFiltersOverIPC[] = "allow-filters-over-ipc"; 940 941} // namespace switches 942