Check media permissions through RenderFrameHostDelegate.

apps/custom_launcher_page_contents.h

 // 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.
 
 #ifndef APPS_CUSTOM_LAUNCHER_PAGE_CONTENTS_H_
 #define APPS_CUSTOM_LAUNCHER_PAGE_CONTENTS_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
@@ skipping 53 matching lines @@
   virtual void RunFileChooser(
       content::WebContents* tab,
       const content::FileChooserParams& params) OVERRIDE;
   virtual void RequestToLockMouse(content::WebContents* web_contents,
                                   bool user_gesture,
                                   bool last_unlocked_by_target) OVERRIDE;
   virtual void RequestMediaAccessPermission(
       content::WebContents* web_contents,
       const content::MediaStreamRequest& request,
       const content::MediaResponseCallback& callback) OVERRIDE;
+  virtual bool CheckMediaAccessPermission(
+      content::WebContents* web_contents,
+      const GURL& security_origin,
+      content::MediaStreamType type) OVERRIDE;
 
  private:
   // content::WebContentsObserver overrides:
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // extensions::ExtensionFunctionDispatcher::Delegate overrides:
   virtual extensions::WindowController* GetExtensionWindowController()
       const OVERRIDE;
   virtual content::WebContents* GetAssociatedWebContents() const OVERRIDE;
 
   void OnRequest(const ExtensionHostMsg_Request_Params& params);
 
   scoped_ptr<content::WebContents> web_contents_;
   scoped_ptr<extensions::ExtensionFunctionDispatcher>
       extension_function_dispatcher_;
   scoped_ptr<extensions::AppDelegate> app_delegate_;
   scoped_ptr<extensions::AppWebContentsHelper> helper_;
 
   std::string extension_id_;
 
   DISALLOW_COPY_AND_ASSIGN(CustomLauncherPageContents);
 };
 
 }  // namespace apps
 
 #endif  // APPS_CUSTOM_LAUNCHER_PAGE_CONTENTS_H_