Enable posting a message from JS to Android webview.

android_webview/native/aw_contents.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_NATIVE_AW_CONTENTS_H_
 #define ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_H_
 
 #include <jni.h>
 #include <list>
 #include <string>
 #include <utility>
 
 #include "android_webview/browser/aw_browser_permission_request_delegate.h"
+#include "android_webview/browser/aw_message_port_message_filter.h"
 #include "android_webview/browser/browser_view_renderer.h"
 #include "android_webview/browser/browser_view_renderer_client.h"
 #include "android_webview/browser/find_helper.h"
 #include "android_webview/browser/gl_view_renderer_manager.h"
 #include "android_webview/browser/icon_helper.h"
 #include "android_webview/browser/renderer_host/aw_render_view_host_ext.h"
 #include "android_webview/native/permission/permission_request_handler_client.h"
 #include "base/android/jni_weak_ref.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/callback_forward.h"
@@ skipping 189 matching lines @@
   void ScrollTo(JNIEnv* env, jobject obj, jint x, jint y);
   void SetDipScale(JNIEnv* env, jobject obj, jfloat dip_scale);
   void SetSaveFormData(bool enabled);
 
   // Sets the java client
   void SetAwAutofillClient(jobject client);
 
   void SetJsOnlineProperty(JNIEnv* env, jobject obj, jboolean network_up);
   void TrimMemory(JNIEnv* env, jobject obj, jint level, jboolean visible);
 
+  scoped_refptr<AwMessagePortMessageFilter> GetMessagePortMessageFilter();
   void PostMessageToFrame(JNIEnv* env, jobject obj, jstring frame_id,
       jstring message, jstring source_origin, jstring target_origin,
       jintArray msgPorts);
   void CreateMessageChannel(JNIEnv* env, jobject obj, jobject callback);
 
  private:
   void InitDataReductionProxyIfNecessary();
   void InitAutofillIfNecessary(bool enabled);
 
   // Geolocation API support
   void ShowGeolocationPrompt(const GURL& origin, base::Callback<void(bool)>);
   void HideGeolocationPrompt(const GURL& origin);
 
   JavaObjectWeakGlobalRef java_ref_;
   scoped_ptr<AwWebContentsDelegate> web_contents_delegate_;
   scoped_ptr<AwContentsClientBridge> contents_client_bridge_;
   scoped_ptr<content::WebContents> web_contents_;
   scoped_ptr<AwRenderViewHostExt> render_view_host_ext_;
   scoped_ptr<FindHelper> find_helper_;
   scoped_ptr<IconHelper> icon_helper_;
   scoped_ptr<AwContents> pending_contents_;
   BrowserViewRenderer browser_view_renderer_;
   scoped_ptr<AwPdfExporter> pdf_exporter_;
   scoped_ptr<PermissionRequestHandler> permission_request_handler_;
+  scoped_refptr<AwMessagePortMessageFilter> message_port_message_filter_;
 
   // GURL is supplied by the content layer as requesting frame.
   // Callback is supplied by the content layer, and is invoked with the result
   // from the permission prompt.
   typedef std::pair<const GURL, base::Callback<void(bool)> > OriginCallback;
   // The first element in the list is always the currently pending request.
   std::list<OriginCallback> pending_geolocation_prompts_;
 
   GLViewRendererManager::Key renderer_manager_key_;
 
   DISALLOW_COPY_AND_ASSIGN(AwContents);
 };
 
 bool RegisterAwContents(JNIEnv* env);
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_H_