Enables the 'hotword not listening' icon in the search box.

ui/app_list/speech_ui_model.cc

 // Copyright 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 "ui/app_list/speech_ui_model.h"
 
 namespace app_list {
 
 namespace {
 
 // The default sound level, just gotten from the developer device.
 const int16 kDefaultSoundLevel = 200;
 
 }  // namespace
 
-SpeechUIModel::SpeechUIModel()
-    : minimum_sound_level_(kDefaultSoundLevel),
+SpeechUIModel::SpeechUIModel(SpeechRecognitionState initial_state)
+    : state_(initial_state),
+      minimum_sound_level_(kDefaultSoundLevel),
       maximum_sound_level_(kDefaultSoundLevel) {}
 
 SpeechUIModel::~SpeechUIModel() {}
 
 void SpeechUIModel::SetSpeechResult(const base::string16& result,
                                     bool is_final) {
   if (result_ == result && is_final_ == is_final)
     return;
 
   result_ = result;
@@ skipping 39 matching lines @@
                     OnSpeechSoundLevelChanged(visible_level));
 }
 
 void SpeechUIModel::SetSpeechRecognitionState(
     SpeechRecognitionState new_state) {
   if (state_ == new_state)
     return;
 
   state_ = new_state;
   // Revert the min/max sound level to the default.
-  if (state_ == SPEECH_RECOGNITION_ON) {
+  if (state_ != SPEECH_RECOGNITION_RECOGNIZING &&
+      state_ != SPEECH_RECOGNITION_IN_SPEECH) {
     minimum_sound_level_ = kDefaultSoundLevel;
     maximum_sound_level_ = kDefaultSoundLevel;
   }
 
   FOR_EACH_OBSERVER(SpeechUIModelObserver,
                     observers_,
                     OnSpeechRecognitionStateChanged(new_state));
 }
 
 void SpeechUIModel::AddObserver(SpeechUIModelObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void SpeechUIModel::RemoveObserver(SpeechUIModelObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 }  // namespace app_list