Turn GoogleURLTrackerNavigationHelper(Impl) into a per-tab object.

chrome/browser/google/chrome_google_url_tracker_client.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/google/chrome_google_url_tracker_client.h"
 
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/google/google_url_tracker.h"
+#include "chrome/browser/google/google_url_tracker_navigation_helper_impl.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/web_contents.h"
 
 ChromeGoogleURLTrackerClient::ChromeGoogleURLTrackerClient() {
 }
 
 ChromeGoogleURLTrackerClient::~ChromeGoogleURLTrackerClient() {
@@ skipping 22 matching lines @@
 
 void ChromeGoogleURLTrackerClient::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK_EQ(content::NOTIFICATION_NAV_ENTRY_PENDING, type);
   content::NavigationController* controller =
       content::Source<content::NavigationController>(source).ptr();
   InfoBarService* infobar_service =
       InfoBarService::FromWebContents(controller->GetWebContents());
-  // Because we're listening to all sources, there may be no
-  // InfoBarService for some notifications, e.g. navigations in
-  // bubbles/balloons etc.
+  // Because we're listening to all sources, there may be no InfoBarService for
+  // some notifications, e.g. navigations in bubbles/balloons etc.
   if (infobar_service) {
     google_url_tracker()->OnNavigationPending(
-        controller,
+        scoped_ptr<GoogleURLTrackerNavigationHelper>(
+            new GoogleURLTrackerNavigationHelperImpl(
+                controller->GetWebContents(), google_url_tracker())),
         infobar_service,
         controller->GetPendingEntry()->GetUniqueID());
   }
 }