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

chrome/browser/ui/omnibox/omnibox_edit_model.h

 // Copyright 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_OMNIBOX_OMNIBOX_EDIT_MODEL_H_
 #define CHROME_BROWSER_UI_OMNIBOX_OMNIBOX_EDIT_MODEL_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 16 matching lines @@
 class OmniboxEditController;
 class OmniboxPopupModel;
 class OmniboxView;
 class Profile;
 
 namespace gfx {
 class Image;
 class Rect;
 }
 
-// Reasons why the Omnibox focus state could change.

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

This shouldn't need to change anymore, right?

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

True.  However, I'd argue that it's better this way.  There may be future
changes to the omnibox focus code that would benefit from the
OmniboxFocusChangeReason being in the same file as OmniboxFocusState because
they are so closely related.

-enum OmniboxFocusChangeReason {
-  // Includes any explicit changes to focus. (e.g. user clicking to change
-  // focus, user tabbing to change focus, any explicit calls to SetFocus,
-  // etc.)
-  OMNIBOX_FOCUS_CHANGE_EXPLICIT,
-
-  // Focus changed to restore state from a tab the user switched to.
-  OMNIBOX_FOCUS_CHANGE_TAB_SWITCH,
-
-  // Focus changed because user started typing. This only happens when focus
-  // state is INVISIBLE (and this results in a change to VISIBLE).
-  OMNIBOX_FOCUS_CHANGE_TYPING,
-};
-
 // Reasons why the Omnibox could change into keyword mode.
 // These numeric values are used in UMA logs; do not change them.
 enum EnteredKeywordModeMethod {
   ENTERED_KEYWORD_MODE_VIA_TAB = 0,
   ENTERED_KEYWORD_MODE_VIA_SPACE_AT_END = 1,
   ENTERED_KEYWORD_MODE_VIA_SPACE_IN_MIDDLE = 2,
   ENTERED_KEYWORD_MODE_NUM_ITEMS
 };
 
 class OmniboxEditModel {
@@ skipping 506 matching lines @@
   // an exact keyword match.  If this is true then keyword mode will be
   // triggered automatically if the input is "<keyword> <search string>".  We
   // allow this when CreatedKeywordSearchByInsertingSpaceInMiddle() is true.
   // This has no effect if we're already in keyword mode.
   bool allow_exact_keyword_match_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxEditModel);
 };
 
 #endif  // CHROME_BROWSER_UI_OMNIBOX_OMNIBOX_EDIT_MODEL_H_