Prerender Instant search base url on omnibox focus event

chrome/browser/ui/browser_instant_controller.h

Index: chrome/browser/ui/browser_instant_controller.h
diff --git a/chrome/browser/ui/browser_instant_controller.h b/chrome/browser/ui/browser_instant_controller.h
index 3953c69f4d72882b5f7e9e744698adef41bda88f..623a0829f00bee34b6eca3a2187eb60edae3b271 100644
--- a/chrome/browser/ui/browser_instant_controller.h
+++ b/chrome/browser/ui/browser_instant_controller.h
@@ -44,6 +44,13 @@ class BrowserInstantController : public SearchModelObserver,
   // Invoked by |browser_| when the active tab changes.
   void ActiveTabChanged();
 
+  // Invoked by |browser_| when a new WebContents was inserted into the
+  // TabStripModel at the specified index |foreground| is whether or not it was
+  // opened in the foreground (selected).
+  void TabInsertedAt(content::WebContents* contents,
+                     int index,
+                     bool foreground);
+
   // Invoked by |browser_| when the active tab is about to be deactivated.
   void TabDeactivated(content::WebContents* contents);