Remove unused includes from core/{editing,fileapi,history,html}

Source/core/html/canvas/WebGLObject.h

 /*
  * Copyright (C) 2009 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. 
  */
 
 #ifndef WebGLObject_h
 #define WebGLObject_h
 
 #include "core/platform/graphics/GraphicsContext3D.h"
 
-#include <wtf/PassRefPtr.h>
-#include <wtf/RefCounted.h>
+#include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class GraphicsContext3D;
 class WebGLContextGroup;
 class WebGLRenderingContext;
 
 class WebGLObject : public RefCounted<WebGLObject> {
 public:
     virtual ~WebGLObject();
@@ skipping 33 matching lines @@
 
 private:
     Platform3DObject m_object;
     unsigned m_attachmentCount;
     bool m_deleted;
 };
 
 } // namespace WebCore
 
 #endif // WebGLObject_h