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

ui/app_list/search_box_model.cc

Index: ui/app_list/search_box_model.cc
diff --git a/ui/app_list/search_box_model.cc b/ui/app_list/search_box_model.cc
index 5130e501cc882ccc2c252184490a0f260130da80..0da29a2da4a3c4e68fc8257eb6fa4a6c068201d7 100644
--- a/ui/app_list/search_box_model.cc
+++ b/ui/app_list/search_box_model.cc
@@ -9,6 +9,20 @@
 
 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() {
 }
 
@@ -20,6 +34,20 @@ void SearchBoxModel::SetIcon(const gfx::ImageSkia& 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;