Revert of Remove setVoiceSearchSupported part of EmbeddedSearch SearchBox API.

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_LOCATION_BAR_LOCATION_BAR_VIEW_MAC_H_
 #define CHROME_BROWSER_UI_COCOA_LOCATION_BAR_LOCATION_BAR_VIEW_MAC_H_
 
 #include <string>
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "base/prefs/pref_member.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.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 "components/content_settings/core/common/content_settings_types.h"
 #include "components/ui/zoom/zoom_event_manager_observer.h"
 
 @class AutocompleteTextField;
 class CommandUpdater;
 class ContentSettingDecoration;
 class EVBubbleDecoration;
 class KeywordHintDecoration;
 class LocationBarDecoration;
 class LocationIconDecoration;
 class ManagePasswordsDecoration;
+class MicSearchDecoration;
 class PageActionDecoration;
 class Profile;
 class SelectedKeywordDecoration;
 class StarDecoration;
 class TranslateDecoration;
 class ZoomDecoration;
 class ZoomDecorationTest;
 
 // A C++ bridge class that represents the location bar UI element to
 // the portable code.  Wires up an OmniboxViewMac instance to
 // the location bar text field, which handles most of the work.
 
 class LocationBarViewMac : public LocationBar,
                            public LocationBarTesting,
                            public ChromeOmniboxEditController,
+                           public SearchModelObserver,
                            public ui_zoom::ZoomEventManagerObserver {
  public:
   LocationBarViewMac(AutocompleteTextField* field,
                      CommandUpdater* command_updater,
                      Profile* profile,
                      Browser* browser);
   ~LocationBarViewMac() override;
 
   // Overridden from LocationBar:
   void ShowFirstRunBubble() override;
@@ skipping 106 matching lines @@
   content::WebContents* GetWebContents() override;
 
   NSImage* GetKeywordImage(const base::string16& keyword);
 
   AutocompleteTextField* GetAutocompleteTextField() { return field_; }
 
   ManagePasswordsDecoration* manage_passwords_decoration() {
     return manage_passwords_decoration_.get();
   }
 
+  // SearchModelObserver:
+  void ModelChanged(const SearchModel::State& old_state,
+                    const SearchModel::State& new_state) override;
+
   Browser* browser() const { return browser_; }
 
   // ZoomManagerObserver:
   // Updates the view for the zoom icon when default zoom levels change.
   void OnDefaultZoomLevelChanged() override;
 
  private:
   friend ZoomDecorationTest;
 
   // Posts |notification| to the default notification center.
@@ skipping 23 matching lines @@
   void ShowFirstRunBubbleInternal();
 
   // Updates the translate decoration in the omnibox with the current translate
   // state.
   void UpdateTranslateDecoration();
 
   // Updates the zoom decoration in the omnibox with the current zoom level.
   // Returns whether any updates were made.
   bool UpdateZoomDecoration(bool default_zoom_changed);
 
+  // Updates the voice search decoration. Returns true if the visible state was
+  // changed.
+  bool UpdateMicSearchDecorationVisibility();
+
   scoped_ptr<OmniboxViewMac> omnibox_view_;
 
   AutocompleteTextField* field_;  // owned by tab controller
 
   // A decoration that shows an icon to the left of the address.
   scoped_ptr<LocationIconDecoration> location_icon_decoration_;
 
   // A decoration that shows the keyword-search bubble on the left.
   scoped_ptr<SelectedKeywordDecoration> selected_keyword_decoration_;
 
@@ skipping 13 matching lines @@
 
   // Decorations for the installed Page Actions.
   ScopedVector<PageActionDecoration> page_action_decorations_;
 
   // The content blocked decorations.
   ScopedVector<ContentSettingDecoration> content_setting_decorations_;
 
   // Keyword hint decoration displayed on the right-hand side.
   scoped_ptr<KeywordHintDecoration> keyword_hint_decoration_;
 
+  // The voice search icon.
+  scoped_ptr<MicSearchDecoration> mic_search_decoration_;
+
   // The right-hand-side button to manage passwords associated with a page.
   scoped_ptr<ManagePasswordsDecoration> manage_passwords_decoration_;
 
   Browser* browser_;
 
   // Used to change the visibility of the star decoration.
   BooleanPrefMember edit_bookmarks_enabled_;
 
   // Indicates whether or not the location bar is currently visible.
   bool location_bar_visible_;
 
   // Used to schedule a task for the first run info bubble.
   base::WeakPtrFactory<LocationBarViewMac> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LocationBarViewMac);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_LOCATION_BAR_LOCATION_BAR_VIEW_MAC_H_