Add onfocuschange to the Extended Search API, with associated isFocused attribute.

chrome/browser/ui/search/instant_page.h

 // Copyright 2013 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_SEARCH_INSTANT_PAGE_H_
 #define CHROME_BROWSER_UI_SEARCH_INSTANT_PAGE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 166 matching lines @@
                        size_t selection_start,
                        size_t selection_end,
                        bool verbatim);
 
   // Tells the page about the current theme background.
   void SendThemeBackgroundInfo(const ThemeBackgroundInfo& theme_info);
 
   // Tells the page whether it is allowed to display Instant results.
   void SetDisplayInstantResults(bool display_instant_results);
 
-  // Tells the page whether the browser is capturing user key strokes.
-  void KeyCaptureChanged(bool is_key_capture_enabled);
+  // Tells the page that the input focus has changed.  This may cause the

[samarth, 2013/05/15 19:05:53]

nit: just "Tells the page that the omnibox focus has changed."

[Donn Denman, 2013/05/20 23:48:14]

Done.

+  // browser's method of capturing user key strokes to also change.
+  // The new focus state, and reason for the change is provided.
+  void FocusChanged(OmniboxFocusState state,
+                    OmniboxFocusChangeReason reason);
 
   // Tells the page about new Most Visited data.
   void SendMostVisitedItems(
       const std::vector<InstantMostVisitedItemIDPair>& items);
 
  protected:
   InstantPage(Delegate* delegate, const std::string& instant_url);
 
   // Sets |contents| as the page to communicate with. |contents| may be NULL,
   // which effectively stops all communication.
@@ skipping 58 matching lines @@
 
   Delegate* const delegate_;
   const std::string instant_url_;
   bool supports_instant_;
   bool instant_support_determined_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantPage);
 };
 
 #endif  // CHROME_BROWSER_UI_SEARCH_INSTANT_PAGE_H_