Move blink scheduler implementation into a component

content/renderer/gpu/compositor_dependencies.h

Index: content/renderer/gpu/compositor_dependencies.h
diff --git a/content/renderer/gpu/compositor_dependencies.h b/content/renderer/gpu/compositor_dependencies.h
index 5c72ee7c2306576586ed7b06e8c520e79b6ef1df..9973a65cdf2619704ab693e4a3100483de1e606f 100644
--- a/content/renderer/gpu/compositor_dependencies.h
+++ b/content/renderer/gpu/compositor_dependencies.h
@@ -23,8 +23,11 @@ namespace gpu {
 class GpuMemoryBufferManager;
 }
 
-namespace content {
+namespace scheduler {
 class RendererScheduler;
+}
+
+namespace content {
 
 class CompositorDependencies {
  public:
@@ -48,7 +51,7 @@ class CompositorDependencies {
   GetCompositorImplThreadTaskRunner() = 0;
   virtual cc::SharedBitmapManager* GetSharedBitmapManager() = 0;
   virtual gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() = 0;
-  virtual RendererScheduler* GetRendererScheduler() = 0;
+  virtual scheduler::RendererScheduler* GetRendererScheduler() = 0;
   virtual cc::ContextProvider* GetSharedMainThreadContextProvider() = 0;
   virtual scoped_ptr<cc::BeginFrameSource> CreateExternalBeginFrameSource(
       int routing_id) = 0;