Introduces the speech recognition UI to app_list.

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 {
+
+SpeechUIModel::SpeechUIModel() {}
+
+SpeechUIModel::~SpeechUIModel() {}
+
+void SpeechUIModel::SetSpeechResult(const base::string16& result,
+                                    bool is_final) {
+  if (result_ == result && is_final_ == is_final)
+    return;
+
+  result_ = result;
+  is_final_ = is_final;
+  FOR_EACH_OBSERVER(SpeechUIModelObserver,
+                    observers_,
+                    OnSpeechResult(result, is_final));
+}
+
+void SpeechUIModel::UpdateSoundLevel(int16 level) {
+  if (sound_level_ == level)
+    return;
+
+  sound_level_ = level;
+  FOR_EACH_OBSERVER(SpeechUIModelObserver,
+                    observers_,
+                    OnSpeechSoundLevelChanged(level));
+}
+
+void SpeechUIModel::SetSpeechRecognitionState(
+    SpeechRecognitionState new_state) {
+  if (state_ == new_state)
+    return;
+
+  state_ = new_state;
+  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