Instant: Use only one hidden WebContents per profile.

chrome/browser/rlz/rlz.cc

Index: chrome/browser/rlz/rlz.cc
diff --git a/chrome/browser/rlz/rlz.cc b/chrome/browser/rlz/rlz.cc
index de2f78f29a9b9c8d1229d566eefc3721f44c13a5..a12d67dbbf5cf3a65a89c015fe9dfbf330f7f28f 100644
--- a/chrome/browser/rlz/rlz.cc
+++ b/chrome/browser/rlz/rlz.cc
@@ -274,9 +274,9 @@ bool RLZTracker::Init(bool first_run,
     // the user performs a first search.
     registrar_.Add(this, chrome::NOTIFICATION_OMNIBOX_OPENED_URL,
                    content::NotificationService::AllSources());
-    // If instant is enabled we'll start searching as soon as the user starts
-    // typing in the omnibox (which triggers INSTANT_CONTROLLER_UPDATED).
-    registrar_.Add(this, chrome::NOTIFICATION_INSTANT_CONTROLLER_UPDATED,
+    // If Instant is enabled we'll start searching as soon as the user starts
+    // typing in the omnibox (which triggers INSTANT_UPDATED).
+    registrar_.Add(this, chrome::NOTIFICATION_INSTANT_UPDATED,
                    content::NotificationService::AllSources());
 
     // Register for notifications from navigations, to see if the user has used
@@ -376,11 +376,11 @@ void RLZTracker::Observe(int type,
                          const content::NotificationDetails& details) {
   switch (type) {
     case chrome::NOTIFICATION_OMNIBOX_OPENED_URL:
-    case chrome::NOTIFICATION_INSTANT_CONTROLLER_UPDATED:
+    case chrome::NOTIFICATION_INSTANT_UPDATED:
       RecordFirstSearch(CHROME_OMNIBOX);
       registrar_.Remove(this, chrome::NOTIFICATION_OMNIBOX_OPENED_URL,
                         content::NotificationService::AllSources());
-      registrar_.Remove(this, chrome::NOTIFICATION_INSTANT_CONTROLLER_UPDATED,
+      registrar_.Remove(this, chrome::NOTIFICATION_INSTANT_UPDATED,
                         content::NotificationService::AllSources());
       break;
     case content::NOTIFICATION_NAV_ENTRY_PENDING: {