Android WebView: post QuotaManager calls to UI thread.

android_webview/browser/jni_dependency_factory.h

 // Copyright (c) 2013 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.
 
 #ifndef ANDROID_WEBVIEW_BROWSER_JNI_DEPENDENCY_FACTORY_H_
 #define ANDROID_WEBVIEW_BROWSER_JNI_DEPENDENCY_FACTORY_H_
 
+#include "base/memory/ref_counted.h"
+
 namespace content {
 class GeolocationPermissionContext;
 class WebContents;
 class WebContentsViewDelegate;
 }  // namespace content
 
 namespace android_webview {
 
 class AwBrowserContext;
 class AwQuotaManagerBridge;
 class AwWebPreferencesPopulater;
 
 // Used to create instances of objects under native that are used in browser.
 class JniDependencyFactory {
  public:
   virtual ~JniDependencyFactory() {}
 
-  virtual AwQuotaManagerBridge* CreateAwQuotaManagerBridge(
+  virtual scoped_refptr<AwQuotaManagerBridge> CreateAwQuotaManagerBridge(
       AwBrowserContext* browser_context) = 0;
   virtual content::GeolocationPermissionContext* CreateGeolocationPermission(
       AwBrowserContext* browser_context) = 0;
   virtual content::WebContentsViewDelegate* CreateViewDelegate(
       content::WebContents* web_contents) = 0;
   virtual AwWebPreferencesPopulater* CreateWebPreferencesPopulater() = 0;
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_JNI_DEPENDENCY_FACTORY_H_