content: Cleanup class/struct forward declarations

content/renderer/speech_recognition_dispatcher.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_
 #define CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_
 
 #include <map>
 #include <memory>
 
@@ skipping 11 matching lines @@
 namespace media {
 class AudioParameters;
 }
 
 namespace content {
 class RenderViewImpl;
 #if BUILDFLAG(ENABLE_WEBRTC)
 class SpeechRecognitionAudioSink;
 #endif
 struct SpeechRecognitionError;
-struct SpeechRecognitionResult;
 
 // SpeechRecognitionDispatcher is a delegate for methods used by WebKit for
 // scripted JS speech APIs. It's the complement of
 // SpeechRecognitionDispatcherHost (owned by RenderViewHost).
 class SpeechRecognitionDispatcher : public RenderViewObserver,
                                     public blink::WebSpeechRecognizer {
  public:
   explicit SpeechRecognitionDispatcher(RenderViewImpl* render_view);
   ~SpeechRecognitionDispatcher() override;
 
@@ skipping 49 matching lines @@
   typedef std::map<int, blink::WebSpeechRecognitionHandle> HandleMap;
   HandleMap handle_map_;
   int next_id_;
 
   DISALLOW_COPY_AND_ASSIGN(SpeechRecognitionDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_