Move the code in libcros' chromeos_speech_synthesis.cc into Chrome

chrome/browser/chromeos/dbus/dbus_thread_manager.h

 // Copyright (c) 2011 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 CHROME_BROWSER_CHROMEOS_DBUS_DBUS_THREAD_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_DBUS_DBUS_THREAD_MANAGER_H_
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/ref_counted.h"
 
 namespace base {
 class Thread;
 };
 
 namespace dbus {
 class Bus;
 };
 
 namespace chromeos {
 
 class CrosDBusService;
 class PowerManagerClient;
 class SessionManagerClient;
 class SensorsSource;
+class SpeechSynthesizerClient;
 
 // DBusThreadManager manages the D-Bus thread, the thread dedicated to
 // handling asynchronous D-Bus operations.
 //
 // This class also manages D-Bus connections and D-Bus clients, which
 // depend on the D-Bus thread to ensure the right order of shutdowns for
 // the D-Bus thread, the D-Bus connections, and the D-Bus clients.
 //
 // CALLBACKS IN D-BUS CLIENTS:
 //
@@ skipping 30 matching lines @@
   // down.
   SessionManagerClient* session_manager_client() {
     return session_manager_client_.get();
   }
 
   // Sets the session manager client. Takes the ownership.
   // The function is exported for testing.
   void set_session_manager_client_for_testing(
       SessionManagerClient* session_manager_client);
 
+  // Returns the speech synthesizer client, owned by DBusThreadManager.
+  // Do not cache this pointer and use it after DBusThreadManager is shut
+  // down.
+  SpeechSynthesizerClient* speech_synthesizer_client() {
+    return speech_synthesizer_client_.get();
+  }
+
  private:
   DBusThreadManager();
   virtual ~DBusThreadManager();
 
   scoped_ptr<base::Thread> dbus_thread_;
   scoped_refptr<dbus::Bus> system_bus_;
   CrosDBusService* cros_dbus_service_;
   scoped_ptr<SensorsSource> sensors_source_;
   scoped_ptr<PowerManagerClient> power_manager_client_;
   scoped_ptr<SessionManagerClient> session_manager_client_;
+  scoped_ptr<SpeechSynthesizerClient> speech_synthesizer_client_;
 
   DISALLOW_COPY_AND_ASSIGN(DBusThreadManager);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_DBUS_DBUS_THREAD_MANAGER_H_