Move SpeechRecognizer delegate into its own header file and put it in the content namespace.

content/browser/speech/speech_recognizer_unittest.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
 #include <vector>
 
 #include "content/browser/browser_thread_impl.h"
 #include "content/browser/speech/speech_recognizer.h"
+#include "content/public/browser/speech_recognizer_delegate.h"
 #include "content/test/test_url_fetcher_factory.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/test_audio_input_controller_factory.h"
 #include "net/base/net_errors.h"
 #include "net/url_request/url_request_status.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::BrowserThread;
 using content::BrowserThreadImpl;
 using media::AudioInputController;
 using media::TestAudioInputController;
 using media::TestAudioInputControllerFactory;
 
 namespace speech_input {
 
-class SpeechRecognizerTest : public SpeechRecognizerDelegate,
+class SpeechRecognizerTest : public content::SpeechRecognizerDelegate,
                              public testing::Test {
  public:
   SpeechRecognizerTest()
       : io_thread_(BrowserThread::IO, &message_loop_),
         audio_manager_(AudioManager::Create()),
         recording_complete_(false),
         recognition_complete_(false),
         result_received_(false),
         audio_received_(false),
         error_(content::SPEECH_INPUT_ERROR_NONE),
         volume_(-1.0f) {
     recognizer_ = new SpeechRecognizer(this, 1, std::string(), std::string(),
                                        NULL, audio_manager_, false,
                                        std::string(), std::string());
     int audio_packet_length_bytes =
         (SpeechRecognizer::kAudioSampleRate *
          SpeechRecognizer::kAudioPacketIntervalMs *
          ChannelLayoutToChannelCount(SpeechRecognizer::kChannelLayout) *
          SpeechRecognizer::kNumBitsPerAudioSample) / (8 * 1000);
     audio_packet_.resize(audio_packet_length_bytes);
   }
 
-  // SpeechRecognizer::Delegate methods.
+  // Overridden from content::SpeechRecognizerDelegate:
   virtual void SetRecognitionResult(
       int caller_id,
       const content::SpeechInputResult& result) OVERRIDE {
     result_received_ = true;
   }
 
   virtual void DidCompleteRecording(int caller_id) OVERRIDE {
     recording_complete_ = true;
   }
 
@@ skipping 355 matching lines @@
   EXPECT_FLOAT_EQ(0.89926866f, volume_);
   EXPECT_FLOAT_EQ(0.75071919f, noise_volume_);
 
   EXPECT_EQ(content::SPEECH_INPUT_ERROR_NONE, error_);
   EXPECT_FALSE(recording_complete_);
   EXPECT_FALSE(recognition_complete_);
   recognizer_->CancelRecognition();
 }
 
 }  // namespace speech_input