Add a command line flag to enable WebGL overlay support.

BUG=372449

Review URL: https://codereview.chromium.org/278363002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272244 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/login/chrome_restart_request.cc

@@ -156,6 +156,7 @@ std::string DeriveCommandLine(const GURL& start_url,
     ::switches::kV,
     ::switches::kVModule,
     ::switches::kEnableWebGLDraftExtensions,
+    ::switches::kEnableWebGLImageChromium,
 #if defined(ENABLE_WEBRTC)
     ::switches::kDisableWebRtcHWDecoding,
     ::switches::kDisableWebRtcHWEncoding,

content/browser/renderer_host/render_process_host_impl.cc

@@ -1106,6 +1106,7 @@ void RenderProcessHostImpl::PropagateBrowserCommandLineToRenderer(
     switches::kEnableVtune,
     switches::kEnableWebAnimationsSVG,
     switches::kEnableWebGLDraftExtensions,
+    switches::kEnableWebGLImageChromium,
     switches::kEnableWebMIDI,
     switches::kEnableZeroCopy,
     switches::kForceCompositingMode,

content/child/runtime_features.cc

@@ -129,6 +129,9 @@ void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
   if (command_line.HasSwitch(switches::kEnableWebGLDraftExtensions))
     WebRuntimeFeatures::enableWebGLDraftExtensions(true);
 
+  if (command_line.HasSwitch(switches::kEnableWebGLImageChromium))
+    WebRuntimeFeatures::enableWebGLImageChromium(true);
+
   if (command_line.HasSwitch(switches::kEnableOverlayFullscreenVideo))
     WebRuntimeFeatures::enableOverlayFullscreenVideo(true);
 

content/public/common/content_switches.cc

@@ -569,6 +569,9 @@ const char kEnableWebAnimationsSVG[]        = "enable-web-animations-svg";
 // Enables WebGL extensions not yet approved by the community.
 const char kEnableWebGLDraftExtensions[] = "enable-webgl-draft-extensions";
 
+// Enables WebGL rendering into a scanout buffer for overlay support.
+const char kEnableWebGLImageChromium[] = "enable-webgl-image-chromium";
+
 // Enables Web MIDI API.
 const char kEnableWebMIDI[]                 = "enable-web-midi";
 

content/public/common/content_switches.h

@@ -166,6 +166,7 @@ CONTENT_EXPORT extern const char kMainFrameResizesAreOrientationChanges[];
 CONTENT_EXPORT extern const char kEnableVtune[];
 extern const char kEnableWebAnimationsSVG[];
 CONTENT_EXPORT extern const char kEnableWebGLDraftExtensions[];
+CONTENT_EXPORT extern const char kEnableWebGLImageChromium[];
 CONTENT_EXPORT extern const char kEnableWebMIDI[];
 CONTENT_EXPORT extern const char kEnableZeroCopy[];
 CONTENT_EXPORT extern const char kExtraPluginDir[];