Check media permissions through RenderFrameHostDelegate.

chrome/browser/chromeos/login/ui/webui_login_view.cc

Index: chrome/browser/chromeos/login/ui/webui_login_view.cc
diff --git a/chrome/browser/chromeos/login/ui/webui_login_view.cc b/chrome/browser/chromeos/login/ui/webui_login_view.cc
index 6bd2ea7790b0097ea26a0344a7dff8febc3cbb1f..9fac03aaf1b8b84fa7077de50b7b3dbce070265b 100644
--- a/chrome/browser/chromeos/login/ui/webui_login_view.cc
+++ b/chrome/browser/chromeos/login/ui/webui_login_view.cc
@@ -19,6 +19,7 @@
 #include "chrome/browser/chromeos/login/ui/webui_login_display.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
+#include "chrome/browser/media/media_capture_devices_dispatcher.h"
 #include "chrome/browser/media/media_stream_infobar_delegate.h"
 #include "chrome/browser/password_manager/chrome_password_manager_client.h"
 #include "chrome/browser/renderer_preferences_util.h"
@@ -452,6 +453,14 @@ void WebUILoginView::RequestMediaAccessPermission(
     NOTREACHED() << "Media stream not allowed for WebUI";
 }
 
+bool WebUILoginView::CheckMediaAccessPermission(
+    content::WebContents* web_contents,
+    const GURL& security_origin,
+    content::MediaStreamType type) {
+  return MediaCaptureDevicesDispatcher::GetInstance()
+      ->CheckMediaAccessPermission(web_contents, security_origin, type);
+}
+
 bool WebUILoginView::PreHandleGestureEvent(
     content::WebContents* source,
     const blink::WebGestureEvent& event) {