Convert push_messaging IPC msgs into mojo interfaces

content/child/child_thread_impl.cc

Index: content/child/child_thread_impl.cc
diff --git a/content/child/child_thread_impl.cc b/content/child/child_thread_impl.cc
index 977d87a566ec04e003f288de6b234c69f07f4cbe..0e42540b6a90373056caf5572d920f3b701c6a9d 100644
--- a/content/child/child_thread_impl.cc
+++ b/content/child/child_thread_impl.cc
@@ -41,7 +41,6 @@
 #include "content/child/fileapi/webfilesystem_impl.h"
 #include "content/child/memory/child_memory_message_filter.h"
 #include "content/child/notifications/notification_dispatcher.h"
-#include "content/child/push_messaging/push_dispatcher.h"
 #include "content/child/quota_dispatcher.h"
 #include "content/child/quota_message_filter.h"
 #include "content/child/resource_dispatcher.h"
@@ -490,13 +489,11 @@ void ChildThreadImpl::Init(const Options& options) {
                                               quota_message_filter_.get()));
   notification_dispatcher_ =
       new NotificationDispatcher(thread_safe_sender_.get());
-  push_dispatcher_ = new PushDispatcher(thread_safe_sender_.get());
 
   channel_->AddFilter(histogram_message_filter_.get());
   channel_->AddFilter(resource_message_filter_.get());
   channel_->AddFilter(quota_message_filter_->GetFilter());
   channel_->AddFilter(notification_dispatcher_->GetFilter());
-  channel_->AddFilter(push_dispatcher_->GetFilter());
   channel_->AddFilter(service_worker_message_filter_->GetFilter());
 
   if (!IsInBrowserProcess()) {