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

chrome/browser/google/google_url_tracker_map_entry.h

Index: chrome/browser/google/google_url_tracker_map_entry.h
diff --git a/chrome/browser/google/google_url_tracker_map_entry.h b/chrome/browser/google/google_url_tracker_map_entry.h
index 2e035a7a67c56ef495a3df8df75f7c3617314739..3d8c689e87f27e75d263166ce031810067e39f16 100644
--- a/chrome/browser/google/google_url_tracker_map_entry.h
+++ b/chrome/browser/google/google_url_tracker_map_entry.h
@@ -10,18 +10,14 @@
 
 class GoogleURLTracker;
 class GoogleURLTrackerInfoBarDelegate;
+class GoogleURLTrackerNavigationHelper;
 class InfoBarService;
 
-namespace content {
-class NavigationController;
-}
-
 class GoogleURLTrackerMapEntry : public content::NotificationObserver {
  public:
-  GoogleURLTrackerMapEntry(
-      GoogleURLTracker* google_url_tracker,
-      InfoBarService* infobar_service,
-      const content::NavigationController* navigation_controller);
+  GoogleURLTrackerMapEntry(GoogleURLTracker* google_url_tracker,
+                           InfoBarService* infobar_service,
+                           GoogleURLTrackerNavigationHelper* navigation_helper);
   virtual ~GoogleURLTrackerMapEntry();
 
   bool has_infobar_delegate() const { return !!infobar_delegate_; }
@@ -30,8 +26,8 @@ class GoogleURLTrackerMapEntry : public content::NotificationObserver {
   }
   void SetInfoBarDelegate(GoogleURLTrackerInfoBarDelegate* infobar_delegate);
 
-  const content::NavigationController* navigation_controller() const {
-    return navigation_controller_;
+  GoogleURLTrackerNavigationHelper* navigation_helper() {
+    return navigation_helper_;
   }
 
   void Close(bool redo_search);
@@ -48,7 +44,7 @@ class GoogleURLTrackerMapEntry : public content::NotificationObserver {
   GoogleURLTracker* const google_url_tracker_;
   const InfoBarService* const infobar_service_;
   GoogleURLTrackerInfoBarDelegate* infobar_delegate_;
-  const content::NavigationController* const navigation_controller_;
+  GoogleURLTrackerNavigationHelper* navigation_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(GoogleURLTrackerMapEntry);
 };