Add pin icon to the omnibar in windows 8 metro mode.

chrome/browser/ui/views/location_bar/location_bar_view.h

Index: chrome/browser/ui/views/location_bar/location_bar_view.h
diff --git a/chrome/browser/ui/views/location_bar/location_bar_view.h b/chrome/browser/ui/views/location_bar/location_bar_view.h
index d045e53e64fff072f5686c2191fd47dc2a414918..fade943b5c6782d7ef15ba708c1dfc4896c34b7c 100644
--- a/chrome/browser/ui/views/location_bar/location_bar_view.h
+++ b/chrome/browser/ui/views/location_bar/location_bar_view.h
@@ -42,6 +42,7 @@ class GURL;
 class InstantController;
 class KeywordHintView;
 class LocationIconView;
+class MetroPinView;
 class PageActionWithBadgeView;
 class PageActionImageView;
 class Profile;
@@ -209,6 +210,9 @@ class LocationBarView : public LocationBar,
   // Shows the bookmark bubble.
   void ShowStarBubble(const GURL& url, bool newly_bookmarked);
 
+  // Toggles the metro pin on or off.
+  void SetMetroPinnedState(bool is_pinned);
+
   // Shows the Chrome To Mobile bubble.
   void ShowChromeToMobileBubble();
 
@@ -526,6 +530,9 @@ class LocationBarView : public LocationBar,
   // The Chrome To Mobile page action icon view.
   ChromeToMobileView* chrome_to_mobile_view_;
 
+  // The button to pin the page to the Metro start screen.
+  MetroPinView* metro_pin_view_;
+
   // The mode that dictates how the bar shows.
   Mode mode_;