Implement SpeechRecognizerImplAndroid

content/browser/speech/speech_recognizer_impl.cc

 // Copyright (c) 2013 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 "content/browser/speech/speech_recognizer_impl.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/time.h"
 #include "content/browser/browser_main_loop.h"
@@ skipping 63 matching lines @@
     SpeechRecognitionEventListener* listener,
     int session_id,
     bool is_single_shot,
     SpeechRecognitionEngine* engine)
     : SpeechRecognizer(listener, session_id),
       recognition_engine_(engine),
       endpointer_(kAudioSampleRate),
       is_dispatching_event_(false),
       is_single_shot_(is_single_shot),
       state_(STATE_IDLE) {
-  DCHECK(this->listener() != NULL);
   DCHECK(recognition_engine_ != NULL);
   if (is_single_shot) {
     // In single shot recognition, the session is automatically ended after:
     //  - 0.5 seconds of silence if time <  3 seconds
     //  - 1   seconds of silence if time >= 3 seconds
     endpointer_.set_speech_input_complete_silence_length(
         base::Time::kMicrosecondsPerSecond / 2);
     endpointer_.set_long_speech_input_complete_silence_length(
         base::Time::kMicrosecondsPerSecond);
     endpointer_.set_long_speech_length(3 * base::Time::kMicrosecondsPerSecond);
@@ skipping 559 matching lines @@
 SpeechRecognizerImpl::FSMEventArgs::FSMEventArgs(FSMEvent event_value)
     : event(event_value),
       audio_data(NULL),
       engine_error(SPEECH_RECOGNITION_ERROR_NONE) {
 }
 
 SpeechRecognizerImpl::FSMEventArgs::~FSMEventArgs() {
 }
 
 }  // namespace content