Media Remoting: Add interstitial elements to media element shadow dom.

third_party/WebKit/Source/core/css/CSSPrimitiveValueMappings.h

 /*
  * Copyright (C) 2007 Alexey Proskuryakov <ap@nypop.com>.
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2009 Jeff Schiller <codedread@gmail.com>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ skipping 457 matching lines @@
       break;
     case kTextFieldPart:
       value_id_ = CSSValueTextfield;
       break;
     case kTextAreaPart:
       value_id_ = CSSValueTextarea;
       break;
     case kCapsLockIndicatorPart:
       value_id_ = CSSValueCapsLockIndicator;
       break;
+    case kMediaRemotingCastIconPart:
+      value_id_ = CSSValueInternalMediaRemotingCastIcon;
+      break;
   }
 }
 
 template <>
 inline ControlPart CSSIdentifierValue::ConvertTo() const {
   if (value_id_ == CSSValueNone)
     return kNoControlPart;
   return ControlPart(value_id_ - CSSValueCheckbox + 1);
 }
 
@@ skipping 2921 matching lines @@
     default:
       break;
   }
   NOTREACHED();
   return kContainsNone;
 }
 
 }  // namespace blink
 
 #endif