Remove unused ServiceWorkerDispatcher instance

content/child/child_thread.h

Index: content/child/child_thread.h
diff --git a/content/child/child_thread.h b/content/child/child_thread.h
index e7cf8ec550ef2225cfe12bbf57c5cf0b1b6769c9..9c6005e01f775454b7b05d6235cfa01d29ef21ae 100644
--- a/content/child/child_thread.h
+++ b/content/child/child_thread.h
@@ -44,7 +44,6 @@ class ChildHistogramMessageFilter;
 class ChildResourceMessageFilter;
 class ChildSharedBitmapManager;
 class FileSystemDispatcher;
-class ServiceWorkerDispatcher;
 class ServiceWorkerMessageFilter;
 class QuotaDispatcher;
 class QuotaMessageFilter;
@@ -107,10 +106,6 @@ class CONTENT_EXPORT ChildThread : public IPC::Listener, public IPC::Sender {
     return file_system_dispatcher_.get();
   }
 
-  ServiceWorkerDispatcher* service_worker_dispatcher() const {
-    return service_worker_dispatcher_.get();
-  }
-
   QuotaDispatcher* quota_dispatcher() const {
     return quota_dispatcher_.get();
   }
@@ -227,8 +222,6 @@ class CONTENT_EXPORT ChildThread : public IPC::Listener, public IPC::Sender {
 
   scoped_ptr<FileSystemDispatcher> file_system_dispatcher_;
 
-  scoped_ptr<ServiceWorkerDispatcher> service_worker_dispatcher_;
-
   scoped_ptr<QuotaDispatcher> quota_dispatcher_;
 
   scoped_refptr<ChildHistogramMessageFilter> histogram_message_filter_;