Add FeatureList instance to renderers and propgate enable/disable flags.

content/public/common/content_switches.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/public/common/content_switches.h"
 
 namespace switches {
 
 // The number of MSAA samples for canvas2D. Requires MSAA support by GPU to
 // have an effect. 0 disables MSAA.
@@ skipping 86 matching lines @@
 const char kDisableDirectNPAPIRequests[]    = "disable-direct-npapi-requests";
 
 // Disable the per-domain blocking for 3D APIs after GPU reset.
 // This switch is intended only for tests.
 const char kDisableDomainBlockingFor3DAPIs[] =
     "disable-domain-blocking-for-3d-apis";
 
 // Disable experimental WebGL support.
 const char kDisableExperimentalWebGL[]      = "disable-webgl";
 
+// Comma-separated list of feature names to disable. See also kEnableFeatures.
+const char kDisableFeatures[]               = "disable-features";
+
 // Disable FileSystem API.
 const char kDisableFileSystem[]             = "disable-file-system";
 
 // Disable 3D inside of flapper.
 const char kDisableFlash3d[]                = "disable-flash-3d";
 
 // Disable Stage3D inside of flapper.
 const char kDisableFlashStage3d[]           = "disable-flash-stage3d";
 
 // Disables GPU hardware acceleration.  If software renderer is not in place,
@@ skipping 220 matching lines @@
 const char kDisableEncryptedMedia[] = "disable-encrypted-media";
 
 // Enable experimental canvas features, e.g. canvas 2D context attributes
 const char kEnableExperimentalCanvasFeatures[] =
     "enable-experimental-canvas-features";
 
 // Enables Web Platform features that are in development.
 const char kEnableExperimentalWebPlatformFeatures[] =
     "enable-experimental-web-platform-features";
 
+// Comma-separated list of feature names to enable. See also kDisableFeatures.
+const char kEnableFeatures[] = "enable-features";
+
 // Enable Web Bluetooth.
 const char kEnableWebBluetooth[] = "enable-web-bluetooth";
 
 // Enables TRACE for GL calls in the renderer.
 const char kEnableGpuClientTracing[]        = "enable-gpu-client-tracing";
 
 // Enable GpuMemoryBuffer backed VideoFrames.
 const char kEnableGpuMemoryBufferVideoFrames[] =
     "enable-gpu-memory-buffer-video-frames";
 
@@ skipping 606 matching lines @@
 const char kMemoryPressureThresholdsMb[] = "memory-pressure-thresholds-mb";
 
 // Enables the exporting of the tracing events to ETW. This is only supported on
 // Windows Vista and later.
 const char kTraceExportEventsToETW[] = "trace-export-events-to-etw";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches