Adds the speech recognition button to the app-list searchbox.

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::RightButtonProperty::RightButtonProperty(
+    const gfx::ImageSkia& icon,
+    const gfx::ImageSkia& toggled_icon,
+    const base::string16& tooltip,
+    const base::string16& toggled_tooltip)
+    : icon(icon),
+      toggled_icon(toggled_icon),
+      tooltip(tooltip),
+      toggled_tooltip(toggled_tooltip) {
+}
+
+SearchBoxModel::RightButtonProperty::~RightButtonProperty() {
+}
+
 SearchBoxModel::SearchBoxModel() {
 }
 
 SearchBoxModel::~SearchBoxModel() {
 }
 
 void SearchBoxModel::SetIcon(const gfx::ImageSkia& icon) {
   icon_ = icon;
   FOR_EACH_OBSERVER(SearchBoxModelObserver, observers_, IconChanged());
 }
 
+void SearchBoxModel::SetRightButton(
+    scoped_ptr<SearchBoxModel::RightButtonProperty> right_button_prop) {
+  right_button_prop_.reset(right_button_prop.release());

[xiyuan, 2013/11/12 03:09:25]

nit: right_button_prop_ = right_button_prop.Pass();

[Jun Mukai, 2013/11/12 19:24:09]

Done.

+  FOR_EACH_OBSERVER(SearchBoxModelObserver,
+                    observers_,
+                    RightButtonPropChanged());
+}
+
+void SearchBoxModel::SetRightButtonState(bool toggled) {
+  FOR_EACH_OBSERVER(SearchBoxModelObserver,
+                    observers_,
+                    RightButtonStateChanged(toggled));
+}
+
 void SearchBoxModel::SetHintText(const base::string16& hint_text) {
   if (hint_text_ == hint_text)
     return;
 
   hint_text_ = hint_text;
   FOR_EACH_OBSERVER(SearchBoxModelObserver, observers_, HintTextChanged());
 }
 
 void SearchBoxModel::SetSelectionModel(const gfx::SelectionModel& sel) {
   if (selection_model_ == sel)
@@ skipping 20 matching lines @@
 
 void SearchBoxModel::AddObserver(SearchBoxModelObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void SearchBoxModel::RemoveObserver(SearchBoxModelObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 }  // namespace app_list