Remove more oilpan.

sky/engine/core/html/canvas/Canvas2DContextAttributes.h

 /*
  * Copyright (c) 2013, 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:
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following disclaimer
@@ skipping 12 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef Canvas2DContextAttributes_h
 #define Canvas2DContextAttributes_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/html/canvas/CanvasContextAttributes.h"
 #include "wtf/PassRefPtr.h"
+#include "wtf/text/WTFString.h"
 
 namespace blink {
 
 enum Canvas2DContextStorage {
     PersistentStorage,
     DiscardableStorage
 };
 
 class Canvas2DContextAttributes : public CanvasContextAttributes, public ScriptWrappable {
     DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(Canvas2DContextAttributes);
@@ skipping 13 matching lines @@
 protected:
     Canvas2DContextAttributes();
 
     bool m_alpha;
     Canvas2DContextStorage m_storage;
 };
 
 } // namespace blink
 
 #endif // Canvas2DContextAttributes_h