Check media permissions through RenderFrameHostDelegate.

extensions/browser/app_window/app_web_contents_helper.cc

 // 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.
 
 #include "extensions/browser/app_window/app_web_contents_helper.h"
 
 #include "base/strings/stringprintf.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/browser/page_navigator.h"
 #include "content/public/browser/render_view_host.h"
@@ skipping 79 matching lines @@
     const content::MediaStreamRequest& request,
     const content::MediaResponseCallback& callback) const {
   const Extension* extension = GetExtension();
   if (!extension)
     return;
 
   app_delegate_->RequestMediaAccessPermission(
       web_contents_, request, callback, extension);
 }
 
+bool AppWebContentsHelper::CheckMediaAccessPermission(
+    const GURL& security_origin,
+    content::MediaStreamType type) const {
+  const Extension* extension = GetExtension();
+  if (!extension)
+    return false;
+
+  return app_delegate_->CheckMediaAccessPermission(
+      web_contents_, security_origin, type, extension);
+}
+
 const Extension* AppWebContentsHelper::GetExtension() const {
   return ExtensionRegistry::Get(browser_context_)
       ->enabled_extensions()
       .GetByID(extension_id_);
 }
 
 void AppWebContentsHelper::AddMessageToDevToolsConsole(
     content::ConsoleMessageLevel level,
     const std::string& message) const {
   content::RenderViewHost* rvh = web_contents_->GetRenderViewHost();
   rvh->Send(new ExtensionMsg_AddMessageToConsole(
       rvh->GetRoutingID(), level, message));
 }
 
 }  // namespace extensions