Revert of Remove setVoiceSearchSupported part of EmbeddedSearch SearchBox API.

chrome/browser/ui/views/location_bar/location_bar_view.h

Index: chrome/browser/ui/views/location_bar/location_bar_view.h
diff --git a/chrome/browser/ui/views/location_bar/location_bar_view.h b/chrome/browser/ui/views/location_bar/location_bar_view.h
index 0b17ae7c3c3810c8f6605e316edc2f844227c1fd..ebd575526bab74a1bcefd47a237391d429f1a1cc 100644
--- a/chrome/browser/ui/views/location_bar/location_bar_view.h
+++ b/chrome/browser/ui/views/location_bar/location_bar_view.h
@@ -14,6 +14,7 @@
 #include "chrome/browser/ssl/security_state_model.h"
 #include "chrome/browser/ui/location_bar/location_bar.h"
 #include "chrome/browser/ui/omnibox/chrome_omnibox_edit_controller.h"
+#include "chrome/browser/ui/search/search_model_observer.h"
 #include "chrome/browser/ui/toolbar/chrome_toolbar_model.h"
 #include "chrome/browser/ui/views/dropdown_bar_host.h"
 #include "chrome/browser/ui/views/dropdown_bar_host_delegate.h"
@@ -25,6 +26,7 @@
 #include "ui/gfx/animation/slide_animation.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/geometry/rect.h"
+#include "ui/views/controls/button/button.h"
 #include "ui/views/drag_controller.h"
 
 class ActionBoxButtonView;
@@ -54,6 +56,8 @@
 
 namespace views {
 class BubbleDelegateView;
+class ImageButton;
+class ImageView;
 class Label;
 class Widget;
 }
@@ -69,11 +73,13 @@
 class LocationBarView : public LocationBar,
                         public LocationBarTesting,
                         public views::View,
+                        public views::ButtonListener,
                         public views::DragController,
                         public gfx::AnimationDelegate,
                         public ChromeOmniboxEditController,
                         public DropdownBarHostDelegate,
                         public TemplateURLServiceObserver,
+                        public SearchModelObserver,
                         public ui_zoom::ZoomEventManagerObserver {
  public:
   // The location bar view's class name.
@@ -367,6 +373,9 @@
   void OnPaint(gfx::Canvas* canvas) override;
   void PaintChildren(const ui::PaintContext& context) override;
 
+  // views::ButtonListener:
+  void ButtonPressed(views::Button* sender, const ui::Event& event) override;
+
   // views::DragController:
   void WriteDragDataForView(View* sender,
                             const gfx::Point& press_pt,
@@ -392,6 +401,10 @@
   // TemplateURLServiceObserver:
   void OnTemplateURLServiceChanged() override;
 
+  // SearchModelObserver:
+  void ModelChanged(const SearchModel::State& old_state,
+                    const SearchModel::State& new_state) override;
+
   // The Browser this LocationBarView is in.  Note that at least
   // chromeos::SimpleWebViewDialog uses a LocationBarView outside any browser
   // window, so this may be NULL.
@@ -433,6 +446,9 @@
   // Shown if the selected url has a corresponding keyword.
   KeywordHintView* keyword_hint_view_;
 
+  // The voice search icon.
+  views::ImageButton* mic_search_view_;
+
   // The content setting views.
   ContentSettingViews content_setting_views_;