Use stub impl when libcros fails to load

chrome/browser/chromeos/cros/speech_synthesis_library.cc

 // 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.
 
 #include "chrome/browser/chromeos/cros/speech_synthesis_library.h"
 
 #include "base/message_loop.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "third_party/cros/chromeos_speech_synthesis.h"
 
@@ skipping 48 matching lines @@
   bool StopSpeaking() { return true; }
   bool IsSpeaking() { return false; }
   void InitTts(InitStatusCallback callback) {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SpeechSynthesisLibraryStubImpl);
 };
 
 // static
 SpeechSynthesisLibrary* SpeechSynthesisLibrary::GetImpl(bool stub) {
+  SpeechSynthesisLibrary* impl;
   if (stub)
-    return new SpeechSynthesisLibraryStubImpl();
+    impl = new SpeechSynthesisLibraryStubImpl();
   else
-    return new SpeechSynthesisLibraryImpl();
+    impl = new SpeechSynthesisLibraryImpl();
+  return impl;
 }
 
 }  // namespace chromeos