Unify and provide one IsGarbageCollectedType<T> implementation.

third_party/WebKit/Source/core/css/CSSImageGeneratorValue.cpp

 /*
  * Copyright (C) 2008 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/css/CSSImageGeneratorValue.h"
 
 #include "core/css/CSSCrossfadeValue.h"
 #include "core/css/CSSGradientValue.h"
 #include "core/css/CSSPaintValue.h"
+#include "core/layout/LayoutObject.h"
 #include "platform/graphics/Image.h"
 
 namespace blink {
 
 CSSImageGeneratorValue::CSSImageGeneratorValue(ClassType classType)
     : CSSValue(classType)
 {
 }
 
 CSSImageGeneratorValue::~CSSImageGeneratorValue()
@@ skipping 175 matching lines @@
         break;
     case RadialGradientClass:
         toCSSRadialGradientValue(this)->loadSubimages(document);
         break;
     default:
         ASSERT_NOT_REACHED();
     }
 }
 
 } // namespace blink