Check media permissions through RenderFrameHostDelegate.

extensions/shell/browser/shell_app_window.cc

Index: extensions/shell/browser/shell_app_window.cc
diff --git a/extensions/shell/browser/shell_app_window.cc b/extensions/shell/browser/shell_app_window.cc
index 165dd5ce9a8ffab02f69004b54dfe116b9bbad03..085c853daa9724d08fba6a247fac35ea9aae35da 100644
--- a/extensions/shell/browser/shell_app_window.cc
+++ b/extensions/shell/browser/shell_app_window.cc
@@ -70,6 +70,14 @@ void ShellAppWindow::RequestMediaAccessPermission(
       web_contents, request, callback, extension_);
 }
 
+bool ShellAppWindow::CheckMediaAccessPermission(
+    content::WebContents* web_contents,
+    const GURL& security_origin,
+    content::MediaStreamType type) {
+  media_capture_util::VerifyMediaAccessPermission(type, extension_);
+  return true;
+}
+
 bool ShellAppWindow::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ShellAppWindow, message)