[Win8] Fix pin / unpin status if the user cancels an action or pins / unpins from start screen.

chrome/browser/ui/metro_pin_tab_helper_win.h

Index: chrome/browser/ui/metro_pin_tab_helper_win.h
diff --git a/chrome/browser/ui/metro_pin_tab_helper_win.h b/chrome/browser/ui/metro_pin_tab_helper_win.h
index 77a81a7b74887f3db0eedf8ce11a08ca9e078851..737832ee56deb9e954811ddc8269edcb7303cc66 100644
--- a/chrome/browser/ui/metro_pin_tab_helper_win.h
+++ b/chrome/browser/ui/metro_pin_tab_helper_win.h
@@ -20,7 +20,7 @@ class MetroPinTabHelper
  public:
   virtual ~MetroPinTabHelper();
 
-  bool is_pinned() const { return is_pinned_; }
+  bool IsPinned() const;
 
   void TogglePinnedToStartScreen();
 
@@ -49,17 +49,11 @@ class MetroPinTabHelper
                             int requested_size,
                             const std::vector<SkBitmap>& bitmaps);
 
-  // Queries the metro driver about the pinned state of the current URL.
-  void UpdatePinnedStateForCurrentURL();
-
   void UnPinPageFromStartScreen();
 
   // Called by the |favicon_downloader_| when it has finished.
   void FaviconDownloaderFinished();
 
-  // Whether the current URL is pinned to the metro start screen.
-  bool is_pinned_;
-
   // Candidate Favicon URLs for the current page.
   std::vector<FaviconURL> favicon_url_candidates_;