Decouple Cache Storage messaging from Service Worker/Embedded Worker

content/renderer/render_thread_impl.h

Index: content/renderer/render_thread_impl.h
diff --git a/content/renderer/render_thread_impl.h b/content/renderer/render_thread_impl.h
index 26de62bfa6b56b41a04dbbc91116e43eb5d75f63..040f8a4d6797de9830a081f4c9b6d7fee89afc96 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -92,10 +92,10 @@ class IndexedDBDispatcher;
 class InputHandlerManager;
 class MediaStreamCenter;
 class MemoryObserver;
-class PeerConnectionDependencyFactory;
 class MidiMessageFilter;
 class NetInfoDispatcher;
 class P2PSocketDispatcher;
+class PeerConnectionDependencyFactory;
 class PeerConnectionTracker;
 class RenderProcessObserver;
 class RendererBlinkPlatformImpl;
@@ -103,6 +103,7 @@ class RendererDemuxerAndroid;
 class RendererScheduler;
 class ResourceDispatchThrottler;
 class ResourceSchedulingFilter;
+class ServiceWorkerCacheStorageDispatcher;
 class V8SamplingProfiler;
 class VideoCaptureImplManager;
 class WebGraphicsContext3DCommandBufferImpl;
@@ -478,6 +479,8 @@ class CONTENT_EXPORT RenderThreadImpl
   scoped_ptr<RendererScheduler> renderer_scheduler_;
   scoped_ptr<RendererBlinkPlatformImpl> blink_platform_impl_;
   scoped_ptr<ResourceDispatchThrottler> resource_dispatch_throttler_;
+  scoped_ptr<ServiceWorkerCacheStorageDispatcher>
+      main_thread_cache_storage_dispatcher_;
   scoped_ptr<EmbeddedWorkerDispatcher> embedded_worker_dispatcher_;
 
   // Used on the render thread and deleted by WebKit at shutdown.