[Cast] Disable autohide of media controls for remote playback

Source/core/testing/Internals.cpp

Index: Source/core/testing/Internals.cpp
diff --git a/Source/core/testing/Internals.cpp b/Source/core/testing/Internals.cpp
index 07492b2185b2ff811fe99dc8d7760e4691208f83..4d905bdf4c91e233e7ac6516338196035415af08 100644
--- a/Source/core/testing/Internals.cpp
+++ b/Source/core/testing/Internals.cpp
@@ -1768,6 +1768,14 @@ void Internals::mediaPlayerRemoteRouteAvailabilityChanged(HTMLMediaElement* medi
     mediaElement->remoteRouteAvailabilityChanged(available);
 }
 
+void Internals::mediaPlayerPlayingRemotelyChanged(HTMLMediaElement* mediaElement, bool remote)
+{
+    if (remote)
+        mediaElement->connectedToRemoteDevice();
+    else
+        mediaElement->disconnectedFromRemoteDevice();
+}
+
 void Internals::registerURLSchemeAsBypassingContentSecurityPolicy(const String& scheme)
 {
     SchemeRegistry::registerURLSchemeAsBypassingContentSecurityPolicy(scheme);