Check media permissions through RenderFrameHostDelegate.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index b34f55c9edb9e37a8349a26317f054f8e799a196..76c196beb009cf3e01cfa61c204ec90485e7b400 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -1751,6 +1751,16 @@ void WebContentsImpl::RequestMediaAccessPermission(
   }
 }
 
+bool WebContentsImpl::CheckMediaAccessPermission(const GURL& security_origin,
+                                                 MediaStreamType type) {
+  DCHECK(type == MEDIA_DEVICE_AUDIO_CAPTURE ||
+         type == MEDIA_DEVICE_VIDEO_CAPTURE);
+  if (delegate_)
+    return delegate_->CheckMediaAccessPermission(this, security_origin, type);
+  else

[sky, 2014/09/12 16:19:14]

nit: no else here, or you can make a single return for the whole function, eg:
return delegate_ && delegate->CheckM...

[Henrik Grunell, 2014/09/15 11:33:47]

Done.

+    return false;
+}
+
 SessionStorageNamespace* WebContentsImpl::GetSessionStorageNamespace(
     SiteInstance* instance) {
   return controller_.GetSessionStorageNamespace(instance);