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 7#include "base/command_line.h" 8 9namespace switches { 10 11// The number of MSAA samples for canvas2D. Requires MSAA support by GPU to 12// have an effect. 0 disables MSAA. 13const char kAcceleratedCanvas2dMSAASampleCount[] = "canvas-msaa-sample-count"; 14 15// By default, file:// URIs cannot read other file:// URIs. This is an 16// override for developers who need the old behavior for testing. 17const char kAllowFileAccessFromFiles[] = "allow-file-access-from-files"; 18 19// Allows frames with an https origin to use WebSockets with an insecure URL 20// (ws://). 21const char kAllowInsecureWebSocketFromHttpsOrigin[] = 22 "allow-insecure-websocket-from-https-origin"; 23 24// Allows loopback interface to be added in network list for peer connection. 25const char kAllowLoopbackInPeerConnection[] = 26 "allow-loopback-in-peer-connection"; 27 28// Enables the sandboxed processes to run without a job object assigned to them. 29// This flag is required to allow Chrome to run in RemoteApps or Citrix. This 30// flag can reduce the security of the sandboxed processes and allow them to do 31// certain API calls like shut down Windows or access the clipboard. Also we 32// lose the chance to kill some processes until the outer job that owns them 33// finishes. 34const char kAllowNoSandboxJob[] = "allow-no-sandbox-job"; 35 36// Allows debugging of sandboxed processes (see zygote_main_linux.cc). 37const char kAllowSandboxDebugging[] = "allow-sandbox-debugging"; 38 39// The same as kAuditHandles except all handles are enumerated. 40const char kAuditAllHandles[] = "enable-handle-auditing-all"; 41 42// Enumerates and prints a child process' most dangerous handles when it 43// is terminated. 44const char kAuditHandles[] = "enable-handle-auditing"; 45 46// Choose which logging channels in blink platform to activate. See 47// Logging.cpp in blink's Source/platform for a list of available channels. 48const char kBlinkPlatformLogChannels[] = "blink-platform-log-channels"; 49 50// Block cross-site documents (i.e., HTML/XML/JSON) from being loaded in 51// subresources when a document is not supposed to read them. This will later 52// allow us to block them from the entire renderer process when site isolation 53// is enabled. 54const char kBlockCrossSiteDocuments[] = "block-cross-site-documents"; 55 56// Causes the browser process to throw an assertion on startup. 57const char kBrowserAssertTest[] = "assert-test"; 58 59// Causes the browser process to crash on startup. 60const char kBrowserCrashTest[] = "crash-test"; 61 62// Path to the exe to run for the renderer and plugin subprocesses. 63const char kBrowserSubprocessPath[] = "browser-subprocess-path"; 64 65// Dumps extra logging about plugin loading to the log file. 66const char kDebugPluginLoading[] = "debug-plugin-loading"; 67 68// Sets the tile size used by composited layers. 69const char kDefaultTileWidth[] = "default-tile-width"; 70const char kDefaultTileHeight[] = "default-tile-height"; 71 72// Disable antialiasing on 2d canvas. 73const char kDisable2dCanvasAntialiasing[] = "disable-canvas-aa"; 74 75// Disables client-visible 3D APIs, in particular WebGL and Pepper 3D. 76// This is controlled by policy and is kept separate from the other 77// enable/disable switches to avoid accidentally regressing the policy 78// support for controlling access to these APIs. 79const char kDisable3DAPIs[] = "disable-3d-apis"; 80 81// Disable gpu-accelerated 2d canvas. 82const char kDisableAccelerated2dCanvas[] = "disable-accelerated-2d-canvas"; 83 84// Disables layer squashing. 85const char kDisableLayerSquashing[] = 86 "disable-layer-squashing"; 87 88// Disables hardware acceleration of video decode, where available. 89const char kDisableAcceleratedVideoDecode[] = 90 "disable-accelerated-video-decode"; 91 92// Disable the ApplicationCache. 93const char kDisableApplicationCache[] = "disable-application-cache"; 94 95// Disable limits on the number of backing stores. Can prevent blinking for 96// users with many windows/tabs and lots of memory. 97const char kDisableBackingStoreLimit[] = "disable-backing-store-limit"; 98 99// Disable the creation of compositing layers when it would prevent LCD text. 100const char kDisablePreferCompositingToLCDText[] = 101 "disable-prefer-compositing-to-lcd-text"; 102 103// See comment for kEnableCompositingForTransition. 104const char kDisableCompositingForTransition[] = 105 "disable-transition-compositing"; 106 107// Disables HTML5 DB support. 108const char kDisableDatabases[] = "disable-databases"; 109 110// Disables delegated renderer. 111const char kDisableDelegatedRenderer[] = "disable-delegated-renderer"; 112 113// Disables desktop notifications (default enabled on windows). 114const char kDisableDesktopNotifications[] = "disable-desktop-notifications"; 115 116// Handles URL requests by NPAPI plugins through the renderer. 117const char kDisableDirectNPAPIRequests[] = "disable-direct-npapi-requests"; 118 119// Disable the per-domain blocking for 3D APIs after GPU reset. 120// This switch is intended only for tests. 121extern const char kDisableDomainBlockingFor3DAPIs[] = 122 "disable-domain-blocking-for-3d-apis"; 123 124// Disable experimental WebGL support. 125const char kDisableExperimentalWebGL[] = "disable-webgl"; 126 127// Disable FileSystem API. 128const char kDisableFileSystem[] = "disable-file-system"; 129 130// Disable 3D inside of flapper. 131const char kDisableFlash3d[] = "disable-flash-3d"; 132 133// Disable Stage3D inside of flapper. 134const char kDisableFlashStage3d[] = "disable-flash-stage3d"; 135 136// Disables GPU hardware acceleration. If software renderer is not in place, 137// then the GPU process won't launch. 138const char kDisableGpu[] = "disable-gpu"; 139 140// Prevent the compositor from using its GPU implementation. 141const char kDisableGpuCompositing[] = "disable-gpu-compositing"; 142 143// Disable the limit on the number of times the GPU process may be restarted 144// This switch is intended only for tests. 145extern const char kDisableGpuProcessCrashLimit[] = 146 "disable-gpu-process-crash-limit"; 147 148// Disable GPU rasterization, i.e. rasterize on the CPU only. 149// Overrides the kEnableGpuRasterization and kForceGpuRasterization flags. 150const char kDisableGpuRasterization[] = "disable-gpu-rasterization"; 151 152// When using CPU rasterizing disable low resolution tiling. This uses 153// less power, particularly during animations, but more white may be seen 154// during fast scrolling especially on slower devices. 155const char kDisableLowResTiling[] = "disable-low-res-tiling"; 156 157// Disable the GPU process sandbox. 158const char kDisableGpuSandbox[] = "disable-gpu-sandbox"; 159 160// Disable the thread that crashes the GPU process if it stops responding to 161// messages. 162const char kDisableGpuWatchdog[] = "disable-gpu-watchdog"; 163 164// Suppresses hang monitor dialogs in renderer processes. This may allow slow 165// unload handlers on a page to prevent the tab from closing, but the Task 166// Manager can be used to terminate the offending process in this case. 167const char kDisableHangMonitor[] = "disable-hang-monitor"; 168 169// Disable the RenderThread's HistogramCustomizer. 170const char kDisableHistogramCustomizer[] = "disable-histogram-customizer"; 171 172// Paint content on the main thread instead of the compositor thread. 173// Overrides the kEnableImplSidePainting flag. 174const char kDisableImplSidePainting[] = "disable-impl-side-painting"; 175 176// Prevent Java from running. 177const char kDisableJava[] = "disable-java"; 178 179// Don't execute JavaScript (browser JS like the new tab page still runs). 180const char kDisableJavaScript[] = "disable-javascript"; 181 182// Don't kill a child process when it sends a bad IPC message. Apart 183// from testing, it is a bad idea from a security perspective to enable 184// this switch. 185const char kDisableKillAfterBadIPC[] = "disable-kill-after-bad-ipc"; 186 187// Disables prefixed Encrypted Media API (e.g. webkitGenerateKeyRequest()). 188const char kDisablePrefixedEncryptedMedia[] = 189 "disable-prefixed-encrypted-media"; 190 191// Disables LCD text. 192const char kDisableLCDText[] = "disable-lcd-text"; 193 194// Disables distance field text. 195const char kDisableDistanceFieldText[] = "disable-distance-field-text"; 196 197// Disable LocalStorage. 198const char kDisableLocalStorage[] = "disable-local-storage"; 199 200// Force logging to be disabled. Logging is enabled by default in debug 201// builds. 202const char kDisableLogging[] = "disable-logging"; 203 204// Disables Media Source API (i.e., the MediaSource object). 205const char kDisableMediaSource[] = "disable-media-source"; 206 207// Disable Pepper3D. 208const char kDisablePepper3d[] = "disable-pepper-3d"; 209 210// Disables compositor-accelerated touch-screen pinch gestures. 211const char kDisablePinch[] = "disable-pinch"; 212 213// Prevent plugins from running. 214const char kDisablePlugins[] = "disable-plugins"; 215 216// Disable discovering third-party plug-ins. Effectively loading only 217// ones shipped with the browser plus third-party ones as specified by 218// --extra-plugin-dir and --load-plugin switches. 219const char kDisablePluginsDiscovery[] = "disable-plugins-discovery"; 220 221// Disables remote web font support. SVG font should always work whether this 222// option is specified or not. 223const char kDisableRemoteFonts[] = "disable-remote-fonts"; 224 225// Turns off the accessibility in the renderer. 226const char kDisableRendererAccessibility[] = "disable-renderer-accessibility"; 227 228// Disable the seccomp filter sandbox (seccomp-bpf) (Linux only). 229const char kDisableSeccompFilterSandbox[] = "disable-seccomp-filter-sandbox"; 230 231// Disable session storage. 232const char kDisableSessionStorage[] = "disable-session-storage"; 233 234// Disable the setuid sandbox (Linux only). 235const char kDisableSetuidSandbox[] = "disable-setuid-sandbox"; 236 237// Disable shared workers. 238const char kDisableSharedWorkers[] = "disable-shared-workers"; 239 240// For tests, disable single thread scheduler and only manually composite. 241const char kDisableSingleThreadProxyScheduler[] = 242 "disable-single-thread-proxy-scheduler"; 243 244// Disable smooth scrolling for testing. 245const char kDisableSmoothScrolling[] = "disable-smooth-scrolling"; 246 247// Disables the use of a 3D software rasterizer. 248const char kDisableSoftwareRasterizer[] = "disable-software-rasterizer"; 249 250// Disable multithreaded GPU compositing of web content. 251const char kDisableThreadedCompositing[] = "disable-threaded-compositing"; 252 253// Disable multithreaded, compositor scrolling of web content. 254const char kDisableThreadedScrolling[] = "disable-threaded-scrolling"; 255 256// Disable V8 idle notification after commit. 257// Overrides kEnableV8IdleNotificationAfterCommit. 258const char kDisableV8IdleNotificationAfterCommit[] = 259 "disable-v8-idle-notification-after-commit"; 260 261// Don't enforce the same-origin policy. (Used by people testing their sites.) 262const char kDisableWebSecurity[] = "disable-web-security"; 263 264// Disables support for XSLT. 265const char kDisableXSLT[] = "disable-xslt"; 266 267// Disables Blink's XSSAuditor. The XSSAuditor mitigates reflective XSS. 268const char kDisableXSSAuditor[] = "disable-xss-auditor"; 269 270// Disable rasterizer that writes directly to GPU memory associated with tiles. 271// Overrides the kEnableZeroCopy flag. 272const char kDisableZeroCopy[] = "disable-zero-copy"; 273 274// Specifies if the |DOMAutomationController| needs to be bound in the 275// renderer. This binding happens on per-frame basis and hence can potentially 276// be a performance bottleneck. One should only enable it when automating dom 277// based tests. 278const char kDomAutomationController[] = "dom-automation"; 279 280// Enable partially decoding jpeg images using the GPU. 281// At least YUV decoding will be accelerated when using this flag. 282// Has no effect unless GPU rasterization is enabled. 283const char kEnableAcceleratedJpegDecoding[] = 284 "enable-accelerated-jpeg-decoding"; 285 286// Enable bleeding-edge code to make Chrome draw content faster. The changes 287// behind this path are very likely to break lots of content. 288// ** DO NOT use this flag unless you know what you are doing. ** 289const char kEnableBleedingEdgeRenderingFastPaths[] = 290 "enable-bleeding-edge-rendering-fast-paths"; 291 292// Disable deferred image filters. 293const char kDisableDeferredFilters[] = "disable-deferred-filters"; 294 295// Enables LCD text. 296const char kEnableLCDText[] = "enable-lcd-text"; 297 298// Enables using signed distance fields when rendering text. 299// Only valid if GPU rasterization is enabled as well. 300const char kEnableDistanceFieldText[] = "enable-distance-field-text"; 301 302// Enables experimental feature that maps multiple RenderLayers to 303// one composited layer to avoid pathological layer counts. 304const char kEnableLayerSquashing[] = 305 "enable-layer-squashing"; 306 307// Enable experimental container node culling. 308const char kEnableContainerCulling[] = "enable-container-culling"; 309 310// Use a BeginFrame signal from browser to renderer to schedule rendering. 311const char kEnableBeginFrameScheduling[] = "enable-begin-frame-scheduling"; 312 313// Enable the creation of compositing layers when it would prevent LCD text. 314const char kEnablePreferCompositingToLCDText[] = 315 "enable-prefer-compositing-to-lcd-text"; 316 317// PlzNavigate: Use the experimental browser-side navigation path. 318const char kEnableBrowserSideNavigation[] = "enable-browser-side-navigation"; 319 320// Enable/Disable the creation of compositing layers for RenderLayers with a 321// transition on a property that supports accelerated animation (that is, 322// opacity, -webkit-transform, and -webkit-filter), even when no animation is 323// running. These options allow for three possible scenarios: 324// 1. Default (enabled only if we dectect a highDPI display) 325// 2. Enabled always. 326// 3. Disabled always. 327const char kEnableCompositingForTransition[] = 328 "enable-transition-compositing"; 329 330// Defer image decoding in WebKit until painting. 331const char kEnableDeferredImageDecoding[] = "enable-deferred-image-decoding"; 332 333// Enables delegated renderer. 334const char kEnableDelegatedRenderer[] = "enable-delegated-renderer"; 335 336// Enables display list based 2d canvas implementation. 337const char kEnableDisplayList2dCanvas[] = "enable-display-list-2d-canvas"; 338const char kDisableDisplayList2dCanvas[] = "disable-display-list-2d-canvas"; 339 340// Enables restarting interrupted downloads. 341const char kEnableDownloadResumption[] = "enable-download-resumption"; 342 343// Enables support for Encrypted Media Extensions (e.g. MediaKeys). 344const char kEnableEncryptedMedia[] = "enable-encrypted-media"; 345 346// Enable experimental canvas features, e.g. canvas 2D context attributes 347const char kEnableExperimentalCanvasFeatures[] = 348 "enable-experimental-canvas-features"; 349 350// Enables Web Platform features that are in development. 351const char kEnableExperimentalWebPlatformFeatures[] = 352 "enable-experimental-web-platform-features"; 353 354// By default, cookies are not allowed on file://. They are needed for testing, 355// for example page cycler and layout tests. See bug 1157243. 356const char kEnableFileCookies[] = "enable-file-cookies"; 357 358// Enables TRACE for GL calls in the renderer. 359const char kEnableGpuClientTracing[] = "enable-gpu-client-tracing"; 360 361// Allow heuristics to determine when a layer tile should be drawn with the 362// Skia GPU backend. Only valid with GPU accelerated compositing + 363// impl-side painting. 364const char kEnableGpuRasterization[] = "enable-gpu-rasterization"; 365 366// When using CPU rasterizing generate low resolution tiling. Low res 367// tiles may be displayed during fast scrolls especially on slower devices. 368const char kEnableLowResTiling[] = "enable-low-res-tiling"; 369 370// Paint content on the compositor thread instead of the main thread. 371const char kEnableImplSidePainting[] = "enable-impl-side-painting"; 372 373// Force logging to be enabled. Logging is disabled by default in release 374// builds. 375const char kEnableLogging[] = "enable-logging"; 376 377// Enables the memory benchmarking extension 378const char kEnableMemoryBenchmarking[] = "enable-memory-benchmarking"; 379 380// Enables the network information API. 381const char kEnableNetworkInformation[] = "enable-network-information"; 382 383// Enable rasterizer that writes directly to GPU memory. 384const char kEnableOneCopy[] = "enable-one-copy"; 385 386// Enables use of hardware overlay for fullscreen video playback. Android only. 387const char kEnableOverlayFullscreenVideo[] = "enable-overlay-fullscreen-video"; 388 389// Forward overscroll event data from the renderer to the browser. 390const char kEnableOverscrollNotifications[] = "enable-overscroll-notifications"; 391 392// Enables compositor-accelerated touch-screen pinch gestures. 393const char kEnablePinch[] = "enable-pinch"; 394 395// Make the values returned to window.performance.memory more granular and more 396// up to date in shared worker. Without this flag, the memory information is 397// still available, but it is bucketized and updated less frequently. This flag 398// also applys to workers. 399const char kEnablePreciseMemoryInfo[] = "enable-precise-memory-info"; 400 401// Set options to cache V8 data. (off, preparse data, or code) 402const char kV8CacheOptions[] = "v8-cache-options"; 403 404// Enables the CSS multicol implementation that uses the regions implementation. 405const char kEnableRegionBasedColumns[] = 406 "enable-region-based-columns"; 407 408// Replaces renderer-browser IPC channel with ChnanelMojo. 409const char kEnableRendererMojoChannel[] = 410 "enable-renderer-mojo-channel"; 411 412// Cause the OS X sandbox write to syslog every time an access to a resource 413// is denied by the sandbox. 414const char kEnableSandboxLogging[] = "enable-sandbox-logging"; 415 416// Enables seccomp-bpf support for Android. Requires experimental kernel 417// support. <http://crbug.com/166704> 418const char kEnableSeccompFilterSandbox[] = 419 "enable-seccomp-filter-sandbox"; 420 421// Enables the Skia benchmarking extension 422const char kEnableSkiaBenchmarking[] = "enable-skia-benchmarking"; 423 424// On platforms that support it, enables smooth scroll animation. 425const char kEnableSmoothScrolling[] = "enable-smooth-scrolling"; 426 427// Enable spatial navigation 428const char kEnableSpatialNavigation[] = "enable-spatial-navigation"; 429 430// Enables StatsTable, logging statistics to a global named shared memory table. 431const char kEnableStatsTable[] = "enable-stats-table"; 432 433// Experimentally ensures that each renderer process: 434// 1) Only handles rendering for pages from a single site, apart from iframes. 435// (Note that a page can reference content from multiple origins due to images, 436// JavaScript files, etc. Cross-site iframes are also loaded in-process.) 437// 2) Only has authority to see or use cookies for the page's top-level origin. 438// (So if a.com iframes b.com, the b.com network request will be sent without 439// cookies.) 440// This is expected to break compatibility with many pages for now. Unlike the 441// --site-per-process flag, this allows cross-site iframes, but it blocks all 442// cookies on cross-site requests. 443const char kEnableStrictSiteIsolation[] = "enable-strict-site-isolation"; 444 445// Enable support for sync events in ServiceWorkers. 446const char kEnableServiceWorkerSync[] = "enable-service-worker-sync"; 447 448// Enable use of experimental TCP sockets API for sending data in the 449// SYN packet. 450const char kEnableTcpFastOpen[] = "enable-tcp-fastopen"; 451 452// Enabled threaded compositing for layout tests. 453const char kEnableThreadedCompositing[] = "enable-threaded-compositing"; 454 455// Enable tracing during the execution of browser tests. 456const char kEnableTracing[] = "enable-tracing"; 457 458// The filename to write the output of the test tracing to. 459const char kEnableTracingOutput[] = "enable-tracing-output"; 460 461// Enable screen capturing support for MediaStream API. 462const char kEnableUserMediaScreenCapturing[] = 463 "enable-usermedia-screen-capturing"; 464 465// Enables streaming scripts to V8 while loading. 466const char kEnableV8ScriptStreaming[] = "enable-v8-script-streaming"; 467 468// Send a notification from RenderWidgetCompositor to V8 to do idle work 469// (e.g. garbage collection) after the commit until the beginning of the next 470// frame. This moves the work off the critical path where compositor is waiting 471// for the main thread. The flag is experimental until the implementation of the 472// V8 idle handler is completed. 473const char kEnableV8IdleNotificationAfterCommit[] = 474 "enable-v8-idle-notification-after-commit"; 475 476// Enables the use of the @viewport CSS rule, which allows 477// pages to control aspects of their own layout. This also turns on touch-screen 478// pinch gestures. 479const char kEnableViewport[] = "enable-viewport"; 480 481// Enables the use of the legacy viewport meta tag. Turning this on also 482// turns on the @viewport CSS rule 483const char kEnableViewportMeta[] = "enable-viewport-meta"; 484 485// Resizes of the main frame are the caused by changing between landscape 486// and portrait mode (i.e. Android) so the page should be rescaled to fit 487const char kMainFrameResizesAreOrientationChanges[] = 488 "main-frame-resizes-are-orientation-changes"; 489 490// Enable the Vtune profiler support. 491const char kEnableVtune[] = "enable-vtune-support"; 492 493// Enables WebGL extensions not yet approved by the community. 494const char kEnableWebGLDraftExtensions[] = "enable-webgl-draft-extensions"; 495 496// Enables WebGL rendering into a scanout buffer for overlay support. 497const char kEnableWebGLImageChromium[] = "enable-webgl-image-chromium"; 498 499// Enables Web MIDI API. 500const char kEnableWebMIDI[] = "enable-web-midi"; 501 502// Enable rasterizer that writes directly to GPU memory associated with tiles. 503const char kEnableZeroCopy[] = "enable-zero-copy"; 504 505// Load NPAPI plugins from the specified directory. 506const char kExtraPluginDir[] = "extra-plugin-dir"; 507 508// Some field trials may be randomized in the browser, and the randomly selected 509// outcome needs to be propagated to the renderer. For instance, this is used 510// to modify histograms recorded in the renderer, or to get the renderer to 511// also set of its state (initialize, or not initialize components) to match the 512// experiment(s). The option is also useful for forcing field trials when 513// testing changes locally. The argument is a list of name and value pairs, 514// separated by slashes. See FieldTrialList::CreateTrialsFromString() in 515// field_trial.h for details. 516const char kForceFieldTrials[] = "force-fieldtrials"; 517 518// Always use the Skia GPU backend for drawing layer tiles. Only valid with GPU 519// accelerated compositing + impl-side painting. Overrides the 520// kEnableGpuRasterization flag. 521const char kForceGpuRasterization[] = "force-gpu-rasterization"; 522 523// Force renderer accessibility to be on instead of enabling it on demand when 524// a screen reader is detected. The disable-renderer-accessibility switch 525// overrides this if present. 526const char kForceRendererAccessibility[] = "force-renderer-accessibility"; 527 528// Passes gpu device_id from browser process to GPU process. 529const char kGpuDeviceID[] = "gpu-device-id"; 530 531// Passes gpu driver_vendor from browser process to GPU process. 532const char kGpuDriverVendor[] = "gpu-driver-vendor"; 533 534// Passes gpu driver_version from browser process to GPU process. 535const char kGpuDriverVersion[] = "gpu-driver-version"; 536 537// Extra command line options for launching the GPU process (normally used 538// for debugging). Use like renderer-cmd-prefix. 539const char kGpuLauncher[] = "gpu-launcher"; 540 541// Makes this process a GPU sub-process. 542const char kGpuProcess[] = "gpu-process"; 543 544// Allows shmat() system call in the GPU sandbox. 545const char kGpuSandboxAllowSysVShm[] = "gpu-sandbox-allow-sysv-shm"; 546 547// Makes GPU sandbox failures fatal. 548const char kGpuSandboxFailuresFatal[] = "gpu-sandbox-failures-fatal"; 549 550// Starts the GPU sandbox before creating a GL context. 551const char kGpuSandboxStartEarly[] = "gpu-sandbox-start-early"; 552 553// Causes the GPU process to display a dialog on launch. 554const char kGpuStartupDialog[] = "gpu-startup-dialog"; 555 556// Passes gpu vendor_id from browser process to GPU process. 557const char kGpuVendorID[] = "gpu-vendor-id"; 558 559// These mappings only apply to the host resolver. 560const char kHostResolverRules[] = "host-resolver-rules"; 561 562// Ignores certificate-related errors. 563const char kIgnoreCertificateErrors[] = "ignore-certificate-errors"; 564 565// Ignores GPU blacklist. 566const char kIgnoreGpuBlacklist[] = "ignore-gpu-blacklist"; 567 568// Run the GPU process as a thread in the browser process. 569const char kInProcessGPU[] = "in-process-gpu"; 570 571// Overrides the timeout, in seconds, that a child process waits for a 572// connection from the browser before killing itself. 573const char kIPCConnectionTimeout[] = "ipc-connection-timeout"; 574 575// Specifies the flags passed to JS engine 576const char kJavaScriptFlags[] = "js-flags"; 577 578// Load an NPAPI plugin from the specified path. 579const char kLoadPlugin[] = "load-plugin"; 580 581// Logs GPU control list decisions when enforcing blacklist rules. 582const char kLogGpuControlListDecisions[] = "log-gpu-control-list-decisions"; 583 584// Sets the minimum log level. Valid values are from 0 to 3: 585// INFO = 0, WARNING = 1, LOG_ERROR = 2, LOG_FATAL = 3. 586const char kLoggingLevel[] = "log-level"; 587 588// Enables saving net log events to a file and sets the file name to use. 589const char kLogNetLog[] = "log-net-log"; 590 591// Make plugin processes log their sent and received messages to VLOG(1). 592const char kLogPluginMessages[] = "log-plugin-messages"; 593 594// Sets the width and height above which a composited layer will get tiled. 595const char kMaxUntiledLayerHeight[] = "max-untiled-layer-height"; 596const char kMaxUntiledLayerWidth[] = "max-untiled-layer-width"; 597 598// Sample memory usage with high frequency and store the results to the 599// Renderer.Memory histogram. Used in memory tests. 600const char kMemoryMetrics[] = "memory-metrics"; 601 602// Mutes audio sent to the audio device so it is not audible during 603// automated testing. 604const char kMuteAudio[] = "mute-audio"; 605 606// Don't send HTTP-Referer headers. 607const char kNoReferrers[] = "no-referrers"; 608 609// Disables the sandbox for all process types that are normally sandboxed. 610const char kNoSandbox[] = "no-sandbox"; 611 612// Number of worker threads used to rasterize content. 613const char kNumRasterThreads[] = "num-raster-threads"; 614 615// Controls the behavior of history navigation in response to horizontal 616// overscroll. 617// Set the value to '0' to disable. 618// Set the value to '1' to enable the behavior where pages slide in and out in 619// response to the horizontal overscroll gesture and a screenshot of the target 620// page is shown. 621// Set the value to '2' to enable the simplified overscroll UI where a 622// navigation arrow slides in from the side of the screen in response to the 623// horizontal overscroll gesture. 624// Defaults to '1'. 625const char kOverscrollHistoryNavigation[] = 626 "overscroll-history-navigation"; 627 628// Specifies a command that should be used to launch the plugin process. Useful 629// for running the plugin process through purify or quantify. Ex: 630// --plugin-launcher="path\to\purify /Run=yes" 631const char kPluginLauncher[] = "plugin-launcher"; 632 633// Tells the plugin process the path of the plugin to load 634const char kPluginPath[] = "plugin-path"; 635 636// Causes the process to run as a plugin subprocess. 637const char kPluginProcess[] = "plugin"; 638 639// Causes the plugin process to display a dialog on launch. 640const char kPluginStartupDialog[] = "plugin-startup-dialog"; 641 642// Argument to the process type that indicates a PPAPI broker process type. 643const char kPpapiBrokerProcess[] = "ppapi-broker"; 644 645// "Command-line" arguments for the PPAPI Flash; used for debugging options. 646const char kPpapiFlashArgs[] = "ppapi-flash-args"; 647 648// Runs PPAPI (Pepper) plugins in-process. 649const char kPpapiInProcess[] = "ppapi-in-process"; 650 651// Like kPluginLauncher for PPAPI plugins. 652const char kPpapiPluginLauncher[] = "ppapi-plugin-launcher"; 653 654// Argument to the process type that indicates a PPAPI plugin process type. 655const char kPpapiPluginProcess[] = "ppapi"; 656 657// Causes the PPAPI sub process to display a dialog on launch. Be sure to use 658// --no-sandbox as well or the sandbox won't allow the dialog to display. 659const char kPpapiStartupDialog[] = "ppapi-startup-dialog"; 660 661// Runs a single process for each site (i.e., group of pages from the same 662// registered domain) the user visits. We default to using a renderer process 663// for each site instance (i.e., group of pages from the same registered 664// domain with script connections to each other). 665const char kProcessPerSite[] = "process-per-site"; 666 667// Runs each set of script-connected tabs (i.e., a BrowsingInstance) in its own 668// renderer process. We default to using a renderer process for each 669// site instance (i.e., group of pages from the same registered domain with 670// script connections to each other). 671const char kProcessPerTab[] = "process-per-tab"; 672 673// The value of this switch determines whether the process is started as a 674// renderer or plugin host. If it's empty, it's the browser. 675const char kProcessType[] = "type"; 676 677// Enables more web features over insecure connections. Designed to be used 678// for testing purposes only. 679const char kReduceSecurityForTesting[] = "reduce-security-for-testing"; 680 681// Register Pepper plugins (see pepper_plugin_list.cc for its format). 682const char kRegisterPepperPlugins[] = "register-pepper-plugins"; 683 684// Enables remote debug over HTTP on the specified port. 685const char kRemoteDebuggingPort[] = "remote-debugging-port"; 686 687// Causes the renderer process to throw an assertion on launch. 688const char kRendererAssertTest[] = "renderer-assert-test"; 689 690// On POSIX only: the contents of this flag are prepended to the renderer 691// command line. Useful values might be "valgrind" or "xterm -e gdb --args". 692const char kRendererCmdPrefix[] = "renderer-cmd-prefix"; 693 694// Causes the process to run as renderer instead of as browser. 695const char kRendererProcess[] = "renderer"; 696 697// Overrides the default/calculated limit to the number of renderer processes. 698// Very high values for this setting can lead to high memory/resource usage 699// or instability. 700const char kRendererProcessLimit[] = "renderer-process-limit"; 701 702// Causes the renderer process to display a dialog on launch. 703const char kRendererStartupDialog[] = "renderer-startup-dialog"; 704 705// Causes the process to run as a sandbox IPC subprocess. 706const char kSandboxIPCProcess[] = "sandbox-ipc"; 707 708// Enables or disables scroll end effect in response to vertical overscroll. 709// Set the value to '1' to enable the feature, and set to '0' to disable. 710// Defaults to disabled. 711const char kScrollEndEffect[] = "scroll-end-effect"; 712 713// Visibly render a border around paint rects in the web page to help debug 714// and study painting behavior. 715const char kShowPaintRects[] = "show-paint-rects"; 716 717// Runs the renderer and plugins in the same process as the browser 718const char kSingleProcess[] = "single-process"; 719 720// Experimentally enforces a one-site-per-process security policy. 721// All cross-site navigations force process swaps, and we can restrict a 722// renderer process's access rights based on its site. For details, see: 723// http://www.chromium.org/developers/design-documents/site-isolation 724// 725// Unlike --enable-strict-site-isolation (which allows cross-site iframes), 726// this flag does not affect which cookies are attached to cross-site requests. 727// Support is being added to render cross-site iframes in a different process 728// than their parent pages. 729const char kSitePerProcess[] = "site-per-process"; 730 731// Skip gpu info collection, blacklist loading, and blacklist auto-update 732// scheduling at browser startup time. 733// Therefore, all GPU features are available, and about:gpu page shows empty 734// content. The switch is intended only for layout tests. 735// TODO(gab): Get rid of this switch entirely. 736const char kSkipGpuDataLoading[] = "skip-gpu-data-loading"; 737 738// Specifies if the browser should start in fullscreen mode, like if the user 739// had pressed F11 right after startup. 740const char kStartFullscreen[] = "start-fullscreen"; 741 742// Specifies if the |StatsCollectionController| needs to be bound in the 743// renderer. This binding happens on per-frame basis and hence can potentially 744// be a performance bottleneck. One should only enable it when running a test 745// that needs to access the provided statistics. 746const char kStatsCollectionController[] = 747 "enable-stats-collection-bindings"; 748 749// Upscale defaults to "good". 750const char kTabCaptureDownscaleQuality[] = "tab-capture-downscale-quality"; 751 752// Scaling quality for capturing tab. Should be one of "fast", "good" or "best". 753// One flag for upscaling, one for downscaling. 754// Upscale defaults to "best". 755const char kTabCaptureUpscaleQuality[] = "tab-capture-upscale-quality"; 756 757// Allows for forcing socket connections to http/https to use fixed ports. 758const char kTestingFixedHttpPort[] = "testing-fixed-http-port"; 759const char kTestingFixedHttpsPort[] = "testing-fixed-https-port"; 760 761// Type of the current test harness ("browser" or "ui"). 762const char kTestType[] = "test-type"; 763 764const char kTouchScrollingMode[] = "touch-scrolling-mode"; 765const char kTouchScrollingModeAsyncTouchmove[] = "async-touchmove"; 766const char kTouchScrollingModeSyncTouchmove[] = "sync-touchmove"; 767const char kTouchScrollingModeTouchcancel[] = "touchcancel"; 768 769// Causes TRACE_EVENT flags to be recorded beginning with shutdown. Optionally, 770// can specify the specific trace categories to include (e.g. 771// --trace-shutdown=base,net) otherwise, all events are recorded. 772// --trace-shutdown-file can be used to control where the trace log gets stored 773// to since there is otherwise no way to access the result. 774const char kTraceShutdown[] = "trace-shutdown"; 775 776// If supplied, sets the file which shutdown tracing will be stored into, if 777// omitted the default will be used "chrometrace.log" in the current directory. 778// Has no effect unless --trace-shutdown is also supplied. 779// Example: --trace-shutdown --trace-shutdown-file=/tmp/trace_event.log 780const char kTraceShutdownFile[] = "trace-shutdown-file"; 781 782// Causes TRACE_EVENT flags to be recorded from startup. Optionally, can 783// specify the specific trace categories to include (e.g. 784// --trace-startup=base,net) otherwise, all events are recorded. Setting this 785// flag results in the first call to BeginTracing() to receive all trace events 786// since startup. In Chrome, you may find --trace-startup-file and 787// --trace-startup-duration to control the auto-saving of the trace (not 788// supported in the base-only TraceLog component). 789const char kTraceStartup[] = "trace-startup"; 790 791// Sets the time in seconds until startup tracing ends. If omitted a default of 792// 5 seconds is used. Has no effect without --trace-startup, or if 793// --startup-trace-file=none was supplied. 794const char kTraceStartupDuration[] = "trace-startup-duration"; 795 796// If supplied, sets the file which startup tracing will be stored into, if 797// omitted the default will be used "chrometrace.log" in the current directory. 798// Has no effect unless --trace-startup is also supplied. 799// Example: --trace-startup --trace-startup-file=/tmp/trace_event.log 800// As a special case, can be set to 'none' - this disables automatically saving 801// the result to a file and the first manually recorded trace will then receive 802// all events since startup. 803const char kTraceStartupFile[] = "trace-startup-file"; 804 805// Sets the target URL for uploading tracing data. 806const char kTraceUploadURL[] = "trace-upload-url"; 807 808 809// Prioritizes the UI's command stream in the GPU process 810extern const char kUIPrioritizeInGpuProcess[] = 811 "ui-prioritize-in-gpu-process"; 812 813// Overrides the preferred discardable memory implementation. 814const char kUseDiscardableMemory[] = "use-discardable-memory"; 815 816// Bypass the media stream infobar by selecting the default device for media 817// streams (e.g. WebRTC). Works with --use-fake-device-for-media-stream. 818const char kUseFakeUIForMediaStream[] = "use-fake-ui-for-media-stream"; 819 820// Set when Chromium should use a mobile user agent. 821const char kUseMobileUserAgent[] = "use-mobile-user-agent"; 822 823// Use the new surfaces system to handle compositor delegation. 824const char kUseSurfaces[] = "use-surfaces"; 825 826// On POSIX only: the contents of this flag are prepended to the utility 827// process command line. Useful values might be "valgrind" or "xterm -e gdb 828// --args". 829const char kUtilityCmdPrefix[] = "utility-cmd-prefix"; 830 831// Causes the process to run as a utility subprocess. 832const char kUtilityProcess[] = "utility"; 833 834// The utility process is sandboxed, with access to one directory. This flag 835// specifies the directory that can be accessed. 836const char kUtilityProcessAllowedDir[] = "utility-allowed-dir"; 837 838// Allows MDns to access network in sandboxed process. 839const char kUtilityProcessEnableMDns[] = "utility-enable-mdns"; 840 841const char kUtilityProcessRunningElevated[] = "utility-run-elevated"; 842 843// In debug builds, asserts that the stream of input events is valid. 844const char kValidateInputEventStream[] = "validate-input-event-stream"; 845 846// Will add kWaitForDebugger to every child processes. If a value is passed, it 847// will be used as a filter to determine if the child process should have the 848// kWaitForDebugger flag passed on or not. 849const char kWaitForDebuggerChildren[] = "wait-for-debugger-children"; 850 851// The prefix used when starting the zygote process. (i.e. 'gdb --args') 852const char kZygoteCmdPrefix[] = "zygote-cmd-prefix"; 853 854// Causes the process to run as a renderer zygote. 855const char kZygoteProcess[] = "zygote"; 856 857#if defined(ENABLE_WEBRTC) 858// Disables audio processing in a MediaStreamTrack. When this flag is on, AEC, 859// NS and AGC will be done in PeerConnection instead of MediaStreamTrack. 860const char kDisableAudioTrackProcessing[] = "disable-audio-track-processing"; 861 862// Disables HW decode acceleration for WebRTC. 863const char kDisableWebRtcHWDecoding[] = "disable-webrtc-hw-decoding"; 864 865// Disables encryption of RTP Media for WebRTC. When Chrome embeds Content, it 866// ignores this switch on its stable and beta channels. 867const char kDisableWebRtcEncryption[] = "disable-webrtc-encryption"; 868 869// Disables HW encode acceleration for WebRTC. 870const char kDisableWebRtcHWEncoding[] = "disable-webrtc-hw-encoding"; 871 872// Enables VP8 HW encode acceleration for WebRTC. 873const char kEnableWebRtcHWVp8Encoding[] = "enable-webrtc-hw-vp8-encoding"; 874 875// Enables H264 HW encode acceleration for WebRTC. 876const char kEnableWebRtcHWH264Encoding[] = "enable-webrtc-hw-h264-encoding"; 877#endif 878 879#if defined(OS_ANDROID) 880// Disable user gesture requirement for media playback. 881const char kDisableGestureRequirementForMediaPlayback[] = 882 "disable-gesture-requirement-for-media-playback"; 883 884// Disable the click delay by sending click events during double tap. 885const char kDisableClickDelay[] = "disable-click-delay"; 886 887// Disable overscroll edge effects like those found in Android views. 888const char kDisableOverscrollEdgeEffect[] = "disable-overscroll-edge-effect"; 889 890// WebRTC is enabled by default on Android. 891const char kDisableWebRTC[] = "disable-webrtc"; 892 893// Enable the PowerSaveBlocker in ContentVideoView. Android only. 894const char kEnableContentVideoViewPowerSaveBlocker[] = 895 "enable-content-video-view-power-save-blocker"; 896 897// Enable the recognition part of the Web Speech API. 898const char kEnableSpeechRecognition[] = "enable-speech-recognition"; 899 900// Always use the video overlay for the embedded video. 901// This switch is intended only for tests. 902const char kForceUseOverlayEmbeddedVideo[] = "force-use-overlay-embedded-video"; 903 904// The telephony region (ISO country code) to use in phone number detection. 905const char kNetworkCountryIso[] = "network-country-iso"; 906 907// Enables remote debug over HTTP on the specified socket name. 908const char kRemoteDebuggingSocketName[] = "remote-debugging-socket-name"; 909 910// Block ChildProcessMain thread of the renderer's ChildProcessService until a 911// Java debugger is attached. 912const char kRendererWaitForJavaDebugger[] = "renderer-wait-for-java-debugger"; 913#endif 914 915// Disable web audio API. 916const char kDisableWebAudio[] = "disable-webaudio"; 917 918#if defined(OS_CHROMEOS) 919// Disables panel fitting (used for mirror mode). 920const char kDisablePanelFitting[] = "disable-panel-fitting"; 921 922// Enables VA-API accelerated video encode. 923const char kDisableVaapiAcceleratedVideoEncode[] = 924 "disable-vaapi-accelerated-video-encode"; 925#endif 926 927#if defined(OS_LINUX) && !defined(OS_CHROMEOS) 928// Allows sending text-to-speech requests to speech-dispatcher, a common 929// Linux speech service. Because it's buggy, the user must explicitly 930// enable it so that visiting a random webpage can't cause instability. 931const char kEnableSpeechDispatcher[] = "enable-speech-dispatcher"; 932#endif 933 934#if defined(OS_MACOSX) && !defined(OS_IOS) 935// Disables support for Core Animation plugins. This is triggered when 936// accelerated compositing is disabled. See http://crbug.com/122430 . 937const char kDisableCoreAnimationPlugins[] = 938 "disable-core-animation-plugins"; 939#endif 940 941#if defined(OS_WIN) 942// Device scale factor passed to certain processes like renderers, etc. 943const char kDeviceScaleFactor[] = "device-scale-factor"; 944 945// Disables the DirectWrite font rendering system on windows. 946const char kDisableDirectWrite[] = "disable-direct-write"; 947 948// Disable the Legacy Window which corresponds to the size of the WebContents. 949const char kDisableLegacyIntermediateWindow[] = "disable-legacy-window"; 950 951// Enable the Win32K process mitigation policy for renderer processes which 952// prevents them from invoking user32 and gdi32 system calls which enter 953// the kernel. This is only supported on Windows 8 and beyond. 954const char kEnableWin32kRendererLockDown[] 955 = "enable_win32k_renderer_lockdown"; 956#endif 957 958// Don't dump stuff here, follow the same order as the header. 959 960} // namespace switches 961