[Cast] Disable autohide of media controls for remote playback

Source/core/html/shadow/MediaControls.cpp

 /*
  * Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 226 matching lines @@
 }
 
 void MediaControls::makeTransparent()
 {
     m_panel->makeTransparent();
 }
 
 bool MediaControls::shouldHideMediaControls(unsigned behaviorFlags) const
 {
     // Never hide for a media element without visual representation.
-    if (!mediaElement().hasVideo())
+    if (!mediaElement().hasVideo() || mediaElement().isPlayingRemotely())
         return false;
     // Don't hide if the mouse is over the controls.
     const bool ignoreControlsHover = behaviorFlags & IgnoreControlsHover;
     if (!ignoreControlsHover && m_panel->hovered())
         return false;
     // Don't hide if the mouse is over the video area.
     const bool ignoreVideoHover = behaviorFlags & IgnoreVideoHover;
     if (!ignoreVideoHover && m_isMouseOverControls)
         return false;
     // Don't hide if focus is on the HTMLMediaElement or within the
@@ skipping 299 matching lines @@
     visitor->trace(m_toggleClosedCaptionsButton);
     visitor->trace(m_fullScreenButton);
     visitor->trace(m_durationDisplay);
     visitor->trace(m_enclosure);
     visitor->trace(m_castButton);
     visitor->trace(m_overlayCastButton);
     HTMLDivElement::trace(visitor);
 }
 
 }