Merge 317853 - Make BackgroundContentsService start up BackgroundContents with a delay, as for Exte…

chrome/browser/extensions/chrome_extension_host_delegate.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 "chrome/browser/extensions/chrome_extension_host_delegate.h"
 
+#include "base/lazy_instance.h"
 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
 #include "chrome/browser/ui/prefs/prefs_tab_helper.h"
 #include "components/app_modal/javascript_dialog_manager.h"
 #include "extensions/browser/extension_host.h"
 #include "extensions/browser/extension_system.h"
+#include "extensions/browser/serial_extension_host_queue.h"
 
 namespace extensions {
 
 ChromeExtensionHostDelegate::ChromeExtensionHostDelegate() {}
 
 ChromeExtensionHostDelegate::~ChromeExtensionHostDelegate() {}
 
 void ChromeExtensionHostDelegate::OnExtensionHostCreated(
     content::WebContents* web_contents) {
   ChromeExtensionWebContentsObserver::CreateForWebContents(web_contents);
@@ skipping 34 matching lines @@
 bool ChromeExtensionHostDelegate::CheckMediaAccessPermission(
     content::WebContents* web_contents,
     const GURL& security_origin,
     content::MediaStreamType type,
     const Extension* extension) {
   return MediaCaptureDevicesDispatcher::GetInstance()
       ->CheckMediaAccessPermission(
           web_contents, security_origin, type, extension);
 }
 
+static base::LazyInstance<SerialExtensionHostQueue> g_queue =
+    LAZY_INSTANCE_INITIALIZER;
+
+ExtensionHostQueue* ChromeExtensionHostDelegate::GetExtensionHostQueue() const {
+  return g_queue.Pointer();
+}
+
 }  // namespace extensions