Check media permissions through RenderFrameHostDelegate.

extensions/shell/browser/media_capture_util.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_SHELL_BROWSER_MEDIA_CAPTURE_UTIL_H_
 #define EXTENSIONS_SHELL_BROWSER_MEDIA_CAPTURE_UTIL_H_
 
 #include "base/macros.h"
 #include "content/public/common/media_stream_request.h"
 
@@ skipping 10 matching lines @@
 // Grants access to audio and video capture devices.
 // * If the caller requests specific device ids, grants access to those.
 // * If the caller does not request specific ids, grants access to the first
 //   available device.
 // Usually used as a helper for media capture ProcessMediaAccessRequest().
 void GrantMediaStreamRequest(content::WebContents* web_contents,
                              const content::MediaStreamRequest& request,
                              const content::MediaResponseCallback& callback,
                              const Extension* extension);
 
+// Verifies that the extension has permission for |type|. If not, crash.
+void VerifyMediaAccessPermission(content::MediaStreamType type,
+                                 const Extension* extension);
+
 }  // namespace media_capture_util
 }  // namespace extensions
 
 #endif  // EXTENSIONS_SHELL_BROWSER_MEDIA_CAPTURE_UTIL_H_