[ServiceWorker] Add EmbeddedWorkerInstanceHost Interface.

content/renderer/service_worker/embedded_worker_dispatcher.cc

Index: content/renderer/service_worker/embedded_worker_dispatcher.cc
diff --git a/content/renderer/service_worker/embedded_worker_dispatcher.cc b/content/renderer/service_worker/embedded_worker_dispatcher.cc
index 8b455cefb2e5f5c506b7f97c8de3bb9422beb854..193be7f2d0707d8faadef79ba19a64068e9d9173 100644
--- a/content/renderer/service_worker/embedded_worker_dispatcher.cc
+++ b/content/renderer/service_worker/embedded_worker_dispatcher.cc
@@ -41,38 +41,11 @@ EmbeddedWorkerDispatcher::EmbeddedWorkerDispatcher() : weak_factory_(this) {}
 
 EmbeddedWorkerDispatcher::~EmbeddedWorkerDispatcher() {}
 
-bool EmbeddedWorkerDispatcher::OnMessageReceived(
-    const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(EmbeddedWorkerDispatcher, message)
-    IPC_MESSAGE_HANDLER(EmbeddedWorkerMsg_StopWorker, OnStopWorker)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
 void EmbeddedWorkerDispatcher::WorkerContextDestroyed(
     int embedded_worker_id) {
-  RenderThreadImpl::current()->thread_safe_sender()->Send(
-      new EmbeddedWorkerHostMsg_WorkerStopped(embedded_worker_id));
   UnregisterWorker(embedded_worker_id);
 }
 
-void EmbeddedWorkerDispatcher::OnStopWorker(int embedded_worker_id) {
-  TRACE_EVENT0("ServiceWorker", "EmbeddedWorkerDispatcher::OnStopWorker");
-  WorkerWrapper* wrapper = workers_.Lookup(embedded_worker_id);
-  // OnStopWorker is possible to be called twice.
-  if (!wrapper) {
-    LOG(WARNING) << "Got OnStopWorker for nonexistent worker";
-    return;
-  }
-  // This should eventually call WorkerContextDestroyed. (We may need to post
-  // a delayed task to forcibly abort the worker context if we find it
-  // necessary)
-  stop_worker_times_[embedded_worker_id] = base::TimeTicks::Now();
-  wrapper->worker()->terminateWorkerContext();
-}
-
 std::unique_ptr<EmbeddedWorkerDispatcher::WorkerWrapper>
 EmbeddedWorkerDispatcher::StartWorkerContext(
     const EmbeddedWorkerStartParams& params,