Revert of 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 5f087fbe95c6001a70f8c304b773060a4a77fbde..2e035a7a67c56ef495a3df8df75f7c3617314739 100644
--- a/chrome/browser/google/google_url_tracker_map_entry.h
+++ b/chrome/browser/google/google_url_tracker_map_entry.h
@@ -5,8 +5,6 @@
 #ifndef CHROME_BROWSER_GOOGLE_GOOGLE_URL_TRACKER_MAP_ENTRY_H_
 #define CHROME_BROWSER_GOOGLE_GOOGLE_URL_TRACKER_MAP_ENTRY_H_
 
-#include "base/memory/scoped_ptr.h"
-#include "chrome/browser/google/google_url_tracker_navigation_helper.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
@@ -14,12 +12,16 @@
 class GoogleURLTrackerInfoBarDelegate;
 class InfoBarService;
 
+namespace content {
+class NavigationController;
+}
+
 class GoogleURLTrackerMapEntry : public content::NotificationObserver {
  public:
   GoogleURLTrackerMapEntry(
       GoogleURLTracker* google_url_tracker,
       InfoBarService* infobar_service,
-      scoped_ptr<GoogleURLTrackerNavigationHelper> navigation_helper);
+      const content::NavigationController* navigation_controller);
   virtual ~GoogleURLTrackerMapEntry();
 
   bool has_infobar_delegate() const { return !!infobar_delegate_; }
@@ -28,8 +30,8 @@
   }
   void SetInfoBarDelegate(GoogleURLTrackerInfoBarDelegate* infobar_delegate);
 
-  GoogleURLTrackerNavigationHelper* navigation_helper() {
-    return navigation_helper_.get();
+  const content::NavigationController* navigation_controller() const {
+    return navigation_controller_;
   }
 
   void Close(bool redo_search);
@@ -46,7 +48,7 @@
   GoogleURLTracker* const google_url_tracker_;
   const InfoBarService* const infobar_service_;
   GoogleURLTrackerInfoBarDelegate* infobar_delegate_;
-  scoped_ptr<GoogleURLTrackerNavigationHelper> navigation_helper_;
+  const content::NavigationController* const navigation_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(GoogleURLTrackerMapEntry);
 };