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

chrome/browser/ui/search/instant_controller.h

Index: chrome/browser/ui/search/instant_controller.h
diff --git a/chrome/browser/ui/search/instant_controller.h b/chrome/browser/ui/search/instant_controller.h
index f0c17f21ee68020742f68bd5652c0e82ab489a47..d2af35ffc398b0b3d4fb914e307efaa262de6672 100644
--- a/chrome/browser/ui/search/instant_controller.h
+++ b/chrome/browser/ui/search/instant_controller.h
@@ -477,6 +477,9 @@ class InstantController : public InstantPage::Delegate,
   // Omnibox focus state.
   OmniboxFocusState omnibox_focus_state_;
 
+  // The reason for the most recent omnibox focus change.
+  OmniboxFocusChangeReason reason_;

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

s/reason_/omnibox_focus_change_reason_/

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

Done.

+
   // The search model mode for the active tab.
   SearchMode search_mode_;