Enable posting a message from JS to Android webview.

android_webview/browser/aw_browser_context.h

 // Copyright (c) 2012 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_AW_BROWSER_CONTEXT_H_
 #define ANDROID_WEBVIEW_BROWSER_AW_BROWSER_CONTEXT_H_
 
 #include <vector>
 
 #include "android_webview/browser/aw_download_manager_delegate.h"
+#include "android_webview/browser/aw_message_port_service.h"
 #include "android_webview/browser/aw_ssl_host_state_delegate.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "components/visitedlink/browser/visitedlink_delegate.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/content_browser_client.h"
 #include "net/url_request/url_request_job_factory.h"
@@ skipping 70 matching lines @@
   data_reduction_proxy::DataReductionProxySettings*
       GetDataReductionProxySettings();
 
   data_reduction_proxy::DataReductionProxyEventStore*
       GetDataReductionProxyEventStore();
 
   AwURLRequestContextGetter* GetAwURLRequestContext();
 
   void CreateUserPrefServiceIfNecessary();
 
+  AwMessagePortService* GetMessagePortService();
+
+
   // content::BrowserContext implementation.
   scoped_ptr<content::ZoomLevelDelegate> CreateZoomLevelDelegate(
       const base::FilePath& partition_path) override;
   virtual base::FilePath GetPath() const override;
   virtual bool IsOffTheRecord() const override;
   virtual net::URLRequestContextGetter* GetRequestContext() override;
   virtual net::URLRequestContextGetter* GetRequestContextForRenderProcess(
       int renderer_child_id) override;
   virtual net::URLRequestContextGetter* GetMediaRequestContext() override;
   virtual net::URLRequestContextGetter* GetMediaRequestContextForRenderProcess(
@@ skipping 22 matching lines @@
   static int legacy_cache_removal_delay_ms_;
 
   // The file path where data for this context is persisted.
   base::FilePath context_storage_path_;
 
   JniDependencyFactory* native_factory_;
   scoped_refptr<net::CookieStore> cookie_store_;
   scoped_refptr<AwURLRequestContextGetter> url_request_context_getter_;
   scoped_refptr<AwQuotaManagerBridge> quota_manager_bridge_;
   scoped_ptr<AwFormDatabaseService> form_database_service_;
+  scoped_ptr<AwMessagePortService> message_port_service_;
 
   AwDownloadManagerDelegate download_manager_delegate_;
 
   scoped_ptr<visitedlink::VisitedLinkMaster> visitedlink_master_;
   scoped_ptr<content::ResourceContext> resource_context_;
 
   scoped_ptr<PrefService> user_pref_service_;
 
   scoped_ptr<data_reduction_proxy::DataReductionProxyConfigurator>
       data_reduction_proxy_configurator_;
   scoped_ptr<data_reduction_proxy::DataReductionProxyStatisticsPrefs>
       data_reduction_proxy_statistics_;
   scoped_ptr<data_reduction_proxy::DataReductionProxySettings>
       data_reduction_proxy_settings_;
   scoped_ptr<data_reduction_proxy::DataReductionProxyEventStore>
       data_reduction_proxy_event_store_;
   scoped_ptr<AwSSLHostStateDelegate> ssl_host_state_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(AwBrowserContext);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_AW_BROWSER_CONTEXT_H_