chromeos: Add a stub implementation for SensorsSource.

chrome/browser/chromeos/dbus/speech_synthesizer_client.cc

 // 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.
 
 #include "chrome/browser/chromeos/dbus/speech_synthesizer_client.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "chrome/browser/chromeos/system/runtime_environment.h"
 #include "dbus/bus.h"
@@ skipping 117 matching lines @@
   virtual void SetSpeakProperties(const std::string& props) OVERRIDE {}
   virtual void StopSpeaking() OVERRIDE {}
   virtual void IsSpeaking(IsSpeakingCallback callback) OVERRIDE {
     callback.Run(false);
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SpeechSynthesizerClientStubImpl);
 };
 
+SpeechSynthesizerClient::SpeechSynthesizerClient() {
+}
+
+SpeechSynthesizerClient::~SpeechSynthesizerClient() {
+}
+
 // static
 SpeechSynthesizerClient* SpeechSynthesizerClient::Create(dbus::Bus* bus) {
   if (system::runtime_environment::IsRunningOnChromeOS()) {
     return new SpeechSynthesizerClientImpl(bus);
   } else {
     return new SpeechSynthesizerClientStubImpl();
   }
 }
 
 }  // namespace chromeos