Clean up forward declarations in Source/modules

Source/modules/speech/SpeechRecognitionAlternative.h

 /*
  * Copyright (C) 2012 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 in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 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 SpeechRecognitionAlternative_h
 #define SpeechRecognitionAlternative_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
-#include "platform/heap/Handle.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
-class ExecutionContext;
 
 class SpeechRecognitionAlternative final : public GarbageCollectedFinalized<SpeechRecognitionAlternative>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static SpeechRecognitionAlternative* create(const String&, double);
 
     const String& transcript() const { return m_transcript; }
     double confidence() const { return m_confidence; }
 
     void trace(Visitor*) { }
 
 private:
     SpeechRecognitionAlternative(const String&, double);
 
     String m_transcript;
     double m_confidence;
 };
 
 } // namespace blink
 
 #endif // SpeechRecognitionAlternative_h