Initialize app_cache_host_ of EmbeddedSharedWorkerStub.

content/renderer/shared_worker/embedded_shared_worker_stub.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/shared_worker/embedded_shared_worker_stub.h"
 
 #include "base/message_loop/message_loop_proxy.h"
 #include "content/child/appcache/appcache_dispatcher.h"
 #include "content/child/appcache/web_application_cache_host_impl.h"
 #include "content/child/scoped_child_process_reference.h"
@@ skipping 43 matching lines @@
 };
 }
 
 EmbeddedSharedWorkerStub::EmbeddedSharedWorkerStub(
     const GURL& url,
     const base::string16& name,
     const base::string16& content_security_policy,
     blink::WebContentSecurityPolicyType security_policy_type,
     bool pause_on_start,
     int route_id)
-    : route_id_(route_id), name_(name), runing_(false), url_(url) {
+    : route_id_(route_id),
+      name_(name),
+      runing_(false),
+      url_(url),
+      app_cache_host_(nullptr) {
   RenderThreadImpl::current()->AddEmbeddedWorkerRoute(route_id_, this);
   impl_ = blink::WebSharedWorker::create(this);
   if (pause_on_start) {
     // Pause worker context when it starts and wait until either DevTools client
     // is attached or explicit resume notification is received.
     impl_->pauseWorkerContextOnStart();
   }
   worker_devtools_agent_.reset(
       new SharedWorkerDevToolsAgent(route_id, impl_));
   impl_->startWorkerContext(url, name_,
@@ skipping 133 matching lines @@
     pending_channels_.push_back(channel);
   }
 }
 
 void EmbeddedSharedWorkerStub::OnTerminateWorkerContext() {
   runing_ = false;
   impl_->terminateWorkerContext();
 }
 
 }  // namespace content