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diff --git a/content/browser/speech/speech_input_dispatcher_host.h b/content/browser/speech/speech_input_dispatcher_host.h
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+++ b/content/browser/speech/speech_input_dispatcher_host.h
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+// Copyright (c) 2010 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_BROWSER_SPEECH_SPEECH_INPUT_DISPATCHER_HOST_H_
+#define CONTENT_BROWSER_SPEECH_SPEECH_INPUT_DISPATCHER_HOST_H_
+
+#include "base/scoped_ptr.h"
+#include "content/browser/browser_message_filter.h"
+#include "content/browser/speech/speech_input_manager.h"
+
+struct SpeechInputHostMsg_StartRecognition_Params;
+
+namespace speech_input {
+
+// SpeechInputDispatcherHost is a delegate for Speech API messages used by
+// RenderMessageFilter.
+// It's the complement of SpeechInputDispatcher (owned by RenderView).
+class SpeechInputDispatcherHost : public BrowserMessageFilter,
+                                  public SpeechInputManager::Delegate {
+ public:
+  class SpeechInputCallers;
+
+  explicit SpeechInputDispatcherHost(int render_process_id);
+
+  // SpeechInputManager::Delegate methods.
+  virtual void SetRecognitionResult(int caller_id,
+                                    const SpeechInputResultArray& result);
+  virtual void DidCompleteRecording(int caller_id);
+  virtual void DidCompleteRecognition(int caller_id);
+
+  // BrowserMessageFilter implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message,
+                                 bool* message_was_ok);
+
+  // Singleton accessor setter useful for tests.
+  static void set_manager_accessor(SpeechInputManager::AccessorMethod* method) {
+    manager_accessor_ = method;
+  }
+
+ private:
+  virtual ~SpeechInputDispatcherHost();
+
+  void OnStartRecognition(
+      const SpeechInputHostMsg_StartRecognition_Params &params);
+  void OnCancelRecognition(int render_view_id, int request_id);
+  void OnStopRecording(int render_view_id, int request_id);
+
+  // Returns the speech input manager to forward events to, creating one if
+  // needed.
+  SpeechInputManager* manager();
+
+  int render_process_id_;
+  bool may_have_pending_requests_;  // Set if we received any speech IPC request
+
+  static SpeechInputManager::AccessorMethod* manager_accessor_;
+
+  DISALLOW_COPY_AND_ASSIGN(SpeechInputDispatcherHost);
+};
+
+}  // namespace speech_input
+
+#endif  // CONTENT_BROWSER_SPEECH_SPEECH_INPUT_DISPATCHER_HOST_H_