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

ui/app_list/search_box_model.cc

 // 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 "ui/app_list/search_box_model.h"
 
 #include "base/metrics/histogram.h"
 #include "ui/app_list/search_box_model_observer.h"
 
 namespace app_list {
 
-SearchBoxModel::ButtonProperty::ButtonProperty(
-    const gfx::ImageSkia& icon,
-    const base::string16& tooltip)
-    : icon(icon),
-      tooltip(tooltip) {
+SearchBoxModel::SpeechButtonProperty::SpeechButtonProperty(
+    const gfx::ImageSkia& on_icon,
+    const base::string16& on_tooltip,
+    const gfx::ImageSkia& off_icon,
+    const base::string16& off_tooltip)
+    : on_icon(on_icon),
+      on_tooltip(on_tooltip),
+      off_icon(off_icon),
+      off_tooltip(off_tooltip) {
 }
 
-SearchBoxModel::ButtonProperty::~ButtonProperty() {
+SearchBoxModel::SpeechButtonProperty::~SpeechButtonProperty() {
 }
 
 SearchBoxModel::SearchBoxModel() {
 }
 
 SearchBoxModel::~SearchBoxModel() {
 }
 
 void SearchBoxModel::SetIcon(const gfx::ImageSkia& icon) {
   icon_ = icon;
   FOR_EACH_OBSERVER(SearchBoxModelObserver, observers_, IconChanged());
 }
 
 void SearchBoxModel::SetSpeechRecognitionButton(
-    scoped_ptr<SearchBoxModel::ButtonProperty> speech_button) {
+    scoped_ptr<SearchBoxModel::SpeechButtonProperty> speech_button) {
   speech_button_ = speech_button.Pass();
   FOR_EACH_OBSERVER(SearchBoxModelObserver,
                     observers_,
                     SpeechRecognitionButtonPropChanged());
 }
 
 void SearchBoxModel::SetHintText(const base::string16& hint_text) {
   if (hint_text_ == hint_text)
     return;
 
@@ skipping 26 matching lines @@
 
 void SearchBoxModel::AddObserver(SearchBoxModelObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void SearchBoxModel::RemoveObserver(SearchBoxModelObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 }  // namespace app_list