Remove unused ServiceWorkerDispatcher instance

The instance |ChildThread::service_worker_dispatcher_| is never used. Removing.

BUG=None

Review URL: https://codereview.chromium.org/408143013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@284904 0039d316-1c4b-4281-b951-d872f2087c98

content/child/child_thread.cc

@@ -37,7 +37,6 @@
 #include "content/child/quota_dispatcher.h"
 #include "content/child/quota_message_filter.h"
 #include "content/child/resource_dispatcher.h"
-#include "content/child/service_worker/service_worker_dispatcher.h"
 #include "content/child/service_worker/service_worker_message_filter.h"
 #include "content/child/socket_stream_dispatcher.h"
 #include "content/child/thread_safe_sender.h"
@@ -257,8 +256,6 @@ void ChildThread::Init() {
 
   service_worker_message_filter_ =
       new ServiceWorkerMessageFilter(thread_safe_sender_.get());
-  service_worker_dispatcher_.reset(
-      new ServiceWorkerDispatcher(thread_safe_sender_.get()));
 
   quota_message_filter_ =
       new QuotaMessageFilter(thread_safe_sender_.get());

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_;