Make AppCache support for SharedWorker in a renderer process.

content/renderer/shared_worker/embedded_shared_worker_stub.h

Index: content/renderer/shared_worker/embedded_shared_worker_stub.h
diff --git a/content/renderer/shared_worker/embedded_shared_worker_stub.h b/content/renderer/shared_worker/embedded_shared_worker_stub.h
index 226b89b79908f178cc81e23625c4435130992e71..bb1a765ce41d1d05e8927b517282a7d56fcf480d 100644
--- a/content/renderer/shared_worker/embedded_shared_worker_stub.h
+++ b/content/renderer/shared_worker/embedded_shared_worker_stub.h
@@ -25,6 +25,7 @@ class WebWorkerPermissionClientProxy;
 
 namespace content {
 class SharedWorkerDevToolsAgent;
+class WebApplicationCacheHostImpl;
 class WebMessagePortChannelImpl;
 
 class EmbeddedSharedWorkerStub : public IPC::Listener,
@@ -80,6 +81,7 @@ class EmbeddedSharedWorkerStub : public IPC::Listener,
   PendingChannelList pending_channels_;
 
   ScopedChildProcessReference process_ref_;
+  WebApplicationCacheHostImpl* app_cache_host_;
   DISALLOW_COPY_AND_ASSIGN(EmbeddedSharedWorkerStub);
 };