Check media permissions through RenderFrameHostDelegate.

extensions/browser/app_window/app_web_contents_helper.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 EXTENSIONS_BROWSER_APP_WINDOW_APP_WEB_CONTENTS_HELPER_H_
 #define EXTENSIONS_BROWSER_APP_WINDOW_APP_WEB_CONTENTS_HELPER_H_
 
 #include "content/public/common/console_message_level.h"
 #include "content/public/common/media_stream_request.h"
 
@@ skipping 30 matching lines @@
 
   // Requests to lock the mouse. See WebContentsDelegate.
   void RequestToLockMouse() const;
 
   // Asks permission to use the camera and/or microphone. See
   // WebContentsDelegate.
   void RequestMediaAccessPermission(
       const content::MediaStreamRequest& request,
       const content::MediaResponseCallback& callback) const;
 
+  // Checks permission to use the camera or microphone. See
+  // WebContentsDelegate.
+  bool CheckMediaAccessPermission(const GURL& security_origin,
+                                  content::MediaStreamType type) const;
+
  private:
   const Extension* GetExtension() const;
 
   // Helper method to add a message to the renderer's DevTools console.
   void AddMessageToDevToolsConsole(content::ConsoleMessageLevel level,
                                    const std::string& message) const;
 
   // The browser context with which this window is associated.
   // AppWindowWebContentsDelegate does not own this object.
   content::BrowserContext* browser_context_;
 
   const std::string extension_id_;
 
   content::WebContents* web_contents_;
 
   AppDelegate* app_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(AppWebContentsHelper);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_APP_WINDOW_APP_WEB_CONTENTS_HELPER_H_