cocoa: fix a11y labeling & state on search icon

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_
 
 #import <Cocoa/Cocoa.h>
 #include <stddef.h>
 
@@ skipping 220 matching lines @@
 
   // Returns true if |level| is SECURE or EV_SECURE.
   bool IsSecureConnection(security_state::SecurityLevel level) const;
 
   // Returns pointers to all of the LocationBarDecorations owned by this
   // LocationBarViewMac. This helper function is used for positioning and
   // re-positioning accessibility views.
   std::vector<LocationBarDecoration*> GetDecorations();
 
   // Updates |decoration|'s accessibility view's position to match the computed
-  // position the decoration will be drawn at.
-  void UpdateAccessibilityViewPosition(LocationBarDecoration* decoration);
+  // position the decoration will be drawn at, and update its enabled state
+  // based on whether |decoration| is accepting presses currently.
+  void UpdateAccessibilityView(LocationBarDecoration* decoration);
 
   std::unique_ptr<OmniboxViewMac> omnibox_view_;
 
   AutocompleteTextField* field_;  // owned by tab controller
 
   // A decoration that shows an icon to the left of the address.
   std::unique_ptr<LocationIconDecoration> location_icon_decoration_;
 
   // A decoration that shows the keyword-search bubble on the left.
   std::unique_ptr<SelectedKeywordDecoration> selected_keyword_decoration_;
@@ skipping 41 matching lines @@
   // The security level of the location bar icon.
   security_state::SecurityLevel security_level_;
 
   // 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_