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

Source/core/html/canvas/WebGLProgram.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 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
  */
 
 #ifndef WebGLProgram_h
 #define WebGLProgram_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/html/canvas/WebGLSharedObject.h"
 #include "core/html/canvas/WebGLShader.h"
 #include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
 class WebGLProgram : public WebGLSharedObject, public ScriptWrappable {
 public:
     virtual ~WebGLProgram();
 
     static PassRefPtr<WebGLProgram> create(WebGLRenderingContext*);
 
@@ skipping 38 matching lines @@
 
     RefPtr<WebGLShader> m_vertexShader;
     RefPtr<WebGLShader> m_fragmentShader;
 
     bool m_infoValid;
 };
 
 } // namespace WebCore
 
 #endif // WebGLProgram_h