Prerender Instant search base url on omnibox focus event

chrome/browser/ui/browser_instant_controller.cc

Index: chrome/browser/ui/browser_instant_controller.cc
diff --git a/chrome/browser/ui/browser_instant_controller.cc b/chrome/browser/ui/browser_instant_controller.cc
index 3e95e325a1a2cafeddc3491ca24746dc1a52075e..421bbf0fdb17e3c3071c552da5a7b055dd28aca2 100644
--- a/chrome/browser/ui/browser_instant_controller.cc
+++ b/chrome/browser/ui/browser_instant_controller.cc
@@ -111,6 +111,19 @@ void BrowserInstantController::ActiveTabChanged() {
   instant_.ActiveTabChanged();
 }
 
+void BrowserInstantController::TabInsertedAt(content::WebContents* contents,
+                                             int index,
+                                             bool foreground) {
+  if (foreground) {
+    InstantSearchPrerenderer* prerenderer =
+        GetInstantSearchPrerenderer(profile());
+    if (prerenderer)
+      prerenderer->Init(
+          contents->GetController().GetSessionStorageNamespaceMap(),
+          contents->GetContainerBounds().size());
+  }
+}
+
 void BrowserInstantController::TabDeactivated(content::WebContents* contents) {
   instant_.TabDeactivated(contents);