Clean up forward declarations and include files in Source/bindings

Source/bindings/core/v8/ScriptPromise.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
@@ skipping 15 matching lines @@
  * THEORY 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 ScriptPromise_h
 #define ScriptPromise_h
 
 #include "bindings/core/v8/ScriptFunction.h"
 #include "bindings/core/v8/ScriptValue.h"
-#include "bindings/core/v8/V8ThrowException.h"
-#include "core/dom/ExceptionCode.h"
 #include "platform/heap/Handle.h"
-#include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
-#include "wtf/text/WTFString.h"
 #include <v8.h>
 
 namespace blink {
 
 class DOMException;
-class ExceptionState;
 
 // ScriptPromise is the class for representing Promise values in C++ world.
 // ScriptPromise holds a Promise.
 // So holding a ScriptPromise as a member variable in DOM object causes
 // memory leaks since it has a reference from C++ to V8.
 //
 class ScriptPromise FINAL {
 public:
     // Constructs an empty promise.
     ScriptPromise() { }
@@ skipping 80 matching lines @@
 
 private:
     RefPtr<ScriptState> m_scriptState;
     ScriptValue m_promise;
 };
 
 } // namespace blink
 
 
 #endif // ScriptPromise_h