Implement media cast buttons

Source/core/rendering/RenderTheme.cpp

 /**
  * This file is part of the theme implementation for form controls in WebCore.
  *
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Computer, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 293 matching lines @@
     case MediaFullScreenVolumeSliderPart:
         return paintMediaFullScreenVolumeSliderTrack(o, paintInfo, r);
     case MediaFullScreenVolumeSliderThumbPart:
         return paintMediaFullScreenVolumeSliderThumb(o, paintInfo, r);
     case MediaTimeRemainingPart:
         return paintMediaTimeRemaining(o, paintInfo, r);
     case MediaCurrentTimePart:
         return paintMediaCurrentTime(o, paintInfo, r);
     case MediaControlsBackgroundPart:
         return paintMediaControlsBackground(o, paintInfo, r);
+    case MediaCastOffButtonPart:
+        return paintMediaCastButton(o, paintInfo, r);
+    case MediaOverlayCastOffButtonPart:
+        return paintMediaCastButton(o, paintInfo, r);
     case MenulistButtonPart:
     case TextFieldPart:
     case TextAreaPart:
         return true;
     case SearchFieldPart:
         return paintSearchField(o, paintInfo, r);
     case SearchFieldCancelButtonPart:
         return paintSearchFieldCancelButton(o, paintInfo, r);
     case SearchFieldDecorationPart:
         return paintSearchFieldDecoration(o, paintInfo, r);
@@ skipping 873 matching lines @@
 
     // padding - not honored by WinIE, needs to be removed.
     style->resetPadding();
 
     // border - honored by WinIE, but looks terrible (just paints in the control box and turns off the Windows XP theme)
     // for now, we will not honor it.
     style->resetBorder();
 }
 
 } // namespace blink