gpu: Add flag for enabling asynchronous worker context.

content/renderer/gpu/compositor_dependencies.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_RENDERER_GPU_COMPOSITOR_DEPENDENCIES_H_
 #define CONTENT_RENDERER_GPU_COMPOSITOR_DEPENDENCIES_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 18 matching lines @@
 namespace scheduler {
 class RendererScheduler;
 }
 
 namespace content {
 
 class CompositorDependencies {
  public:
   virtual bool IsGpuRasterizationForced() = 0;
   virtual bool IsGpuRasterizationEnabled() = 0;
+  virtual bool IsAsyncWorkerContextEnabled() = 0;
   virtual int GetGpuRasterizationMSAASampleCount() = 0;
   virtual bool IsLcdTextEnabled() = 0;
   virtual bool IsDistanceFieldTextEnabled() = 0;
   virtual bool IsZeroCopyEnabled() = 0;
   virtual bool IsPartialRasterEnabled() = 0;
   virtual bool IsGpuMemoryBufferCompositorResourcesEnabled() = 0;
   virtual bool IsElasticOverscrollEnabled() = 0;
   virtual std::vector<unsigned> GetImageTextureTargets() = 0;
   virtual scoped_refptr<base::SingleThreadTaskRunner>
   GetCompositorMainThreadTaskRunner() = 0;
@@ skipping 10 matching lines @@
   virtual cc::TaskGraphRunner* GetTaskGraphRunner() = 0;
   virtual bool AreImageDecodeTasksEnabled() = 0;
   virtual bool IsThreadedAnimationEnabled() = 0;
 
   virtual ~CompositorDependencies() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_GPU_COMPOSITOR_DEPENDENCIES_H_