Added the Vulkan Context Provider implementation.

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 "build/build_config.h"
 #include "content/public/common/content_switches.h"
 
 namespace switches {
 
 // The number of MSAA samples for canvas2D. Requires MSAA support by GPU to
@@ skipping 464 matching lines @@
 const char kEnableUseZoomForDSF[]            = "enable-use-zoom-for-dsf";
 
 // Enables the use of the @viewport CSS rule, which allows
 // pages to control aspects of their own layout. This also turns on touch-screen
 // pinch gestures.
 const char kEnableViewport[]                = "enable-viewport";
 
 // Enable the Vtune profiler support.
 const char kEnableVtune[]                   = "enable-vtune-support";
 
+// Enable Vulkan support, must also have ENABLE_VULKAN defined.
+const char kEnableVulkan[] = "enable-vulkan";
+
 // Enable WebFonts intervention and trigger the signal always.
 const char kEnableWebFontsInterventionTrigger[] =
     "enable-webfonts-intervention-trigger";
 
 // 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";
 
@@ skipping 523 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