Check media permissions through RenderFrameHostDelegate.

extensions/shell/browser/shell_app_window.h

Index: extensions/shell/browser/shell_app_window.h
diff --git a/extensions/shell/browser/shell_app_window.h b/extensions/shell/browser/shell_app_window.h
index ebeb94845204f9bbdc44af047bb2fa91205cb631..0ce6363983fd2973b24ca329d27e3fa2d292a07d 100644
--- a/extensions/shell/browser/shell_app_window.h
+++ b/extensions/shell/browser/shell_app_window.h
@@ -61,6 +61,10 @@ class ShellAppWindow : public content::WebContentsDelegate,
       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;
 
   // content::WebContentsObserver overrides:
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;