Check media permissions through RenderFrameHostDelegate.

extensions/browser/guest_view/web_view/web_view_permission_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_GUEST_VIEW_WEB_VIEW_WEB_VIEW_PERMISSION_HELPER_H_
 #define EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIEW_PERMISSION_HELPER_H_
 
 #include "base/memory/weak_ptr.h"
 #include "base/metrics/user_metrics_action.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 42 matching lines @@
                         bool allowed_by_default);
 
   static WebViewPermissionHelper* FromWebContents(
       content::WebContents* web_contents);
   static WebViewPermissionHelper* FromFrameID(int render_process_id,
                                               int render_frame_id);
   void RequestMediaAccessPermission(
       content::WebContents* source,
       const content::MediaStreamRequest& request,
       const content::MediaResponseCallback& callback);
+  bool CheckMediaAccessPermission(content::WebContents* source,
+                                  const GURL& security_origin,
+                                  content::MediaStreamType type);
   void CanDownload(content::RenderViewHost* render_view_host,
                    const GURL& url,
                    const std::string& request_method,
                    const base::Callback<void(bool)>& callback);
   void RequestPointerLockPermission(bool user_gesture,
                                     bool last_unlocked_by_target,
                                     const base::Callback<void(bool)>& callback);
 
   // Requests Geolocation Permission from the embedder.
   void RequestGeolocationPermission(int bridge_id,
@@ skipping 79 matching lines @@
   WebViewGuest* const web_view_guest_;
 
   base::WeakPtrFactory<WebViewPermissionHelper> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebViewPermissionHelper);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_GUEST_VIEW_WEB_VIEW_WEB_VIEW_PERMISSION_HELPER_H_