Enable posting a message from JS to Android webview.

android_webview/lib/main/aw_main_delegate.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_LIB_MAIN_AW_MAIN_DELEGATE_H_
 #define ANDROID_WEBVIEW_LIB_MAIN_AW_MAIN_DELEGATE_H_
 
 #include "android_webview/browser/jni_dependency_factory.h"
 #include "android_webview/common/aw_content_client.h"
 #include "base/memory/ref_counted.h"
@@ skipping 12 matching lines @@
 
 // Android WebView implementation of ContentMainDelegate.
 class AwMainDelegate : public content::ContentMainDelegate,
                        public JniDependencyFactory {
  public:
   AwMainDelegate();
   virtual ~AwMainDelegate();
 
  private:
   // content::ContentMainDelegate implementation:
-  virtual bool BasicStartupComplete(int* exit_code) override;
-  virtual void PreSandboxStartup() override;
-  virtual void SandboxInitialized(const std::string& process_type) override;
-  virtual int RunProcess(
+  bool BasicStartupComplete(int* exit_code) override;
+  void PreSandboxStartup() override;
+  void SandboxInitialized(const std::string& process_type) override;
+  int RunProcess(
       const std::string& process_type,
       const content::MainFunctionParams& main_function_params) override;
-  virtual void ProcessExiting(const std::string& process_type) override;
-  virtual content::ContentBrowserClient* CreateContentBrowserClient() override;
-  virtual content::ContentRendererClient*
-      CreateContentRendererClient() override;
+  void ProcessExiting(const std::string& process_type) override;
+  content::ContentBrowserClient* CreateContentBrowserClient() override;
+  content::ContentRendererClient* CreateContentRendererClient() override;
 
   // JniDependencyFactory implementation.
-  virtual scoped_refptr<AwQuotaManagerBridge> CreateAwQuotaManagerBridge(
+  scoped_refptr<AwQuotaManagerBridge> CreateAwQuotaManagerBridge(
       AwBrowserContext* browser_context) override;
-  virtual content::WebContentsViewDelegate* CreateViewDelegate(
+  content::WebContentsViewDelegate* CreateViewDelegate(
       content::WebContents* web_contents) override;
-  virtual AwWebPreferencesPopulater* CreateWebPreferencesPopulater() override;
+  AwWebPreferencesPopulater* CreateWebPreferencesPopulater() override;
+  AwMessagePortService* CreateAwMessagePortService() override;
 #if defined(VIDEO_HOLE)
   virtual content::ExternalVideoSurfaceContainer*
       CreateExternalVideoSurfaceContainer(
           content::WebContents* web_contents) override;
 #endif
 
   scoped_ptr<content::BrowserMainRunner> browser_runner_;
   AwContentClient content_client_;
   scoped_ptr<AwContentBrowserClient> content_browser_client_;
   scoped_ptr<AwContentRendererClient> content_renderer_client_;
 
   DISALLOW_COPY_AND_ASSIGN(AwMainDelegate);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_LIB_MAIN_AW_MAIN_DELEGATE_H_