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

chrome/renderer/resources/extensions/searchbox_api.js

Index: chrome/renderer/resources/extensions/searchbox_api.js
diff --git a/chrome/renderer/resources/extensions/searchbox_api.js b/chrome/renderer/resources/extensions/searchbox_api.js
index bfc8405393304826956f1723304e610372783775..9be33329589066c5221cfcbe87b6ba4bd109e9b9 100644
--- a/chrome/renderer/resources/extensions/searchbox_api.js
+++ b/chrome/renderer/resources/extensions/searchbox_api.js
@@ -94,6 +94,7 @@ if (!chrome.embeddedSearch) {
       native function GetAutocompleteResults();
       native function GetDisplayInstantResults();
       native function GetFontSize();
+      native function IsFocused();
       native function IsKeyCaptureEnabled();
       native function SetQuery();
       native function SetQueryFromAutocompleteResult();
@@ -229,6 +230,7 @@ if (!chrome.embeddedSearch) {
       this.__defineGetter__('startMargin', GetStartMargin);
       this.__defineGetter__('rtl', GetRightToLeft);
       this.__defineGetter__('nativeSuggestions', GetAutocompleteResultsWrapper);
+      this.__defineGetter__('isFocused', IsFocused);
       this.__defineGetter__('isKeyCaptureEnabled', IsKeyCaptureEnabled);
       this.__defineGetter__('displayInstantResults', GetDisplayInstantResults);
       this.__defineGetter__('font', GetFont);
@@ -364,6 +366,7 @@ if (!chrome.embeddedSearch) {
 
       this.onmostvisitedchange = null;
       this.onthemechange = null;
+      this.onfocuschange = null;

[samarth, 2013/05/13 20:56:53]

I think this better belongs in the searchbox part of the api. So add it to
this.searchBox rather than this.newTabPage (see where onkeycapturechange is
defined).

[Donn Denman, 2013/05/13 23:44:50]

Done.

     };
 
     // Export legacy searchbox API.