Site specific secondary tiles for Windows 8.

chrome/browser/ui/metro_pin_tab_helper.h

Index: chrome/browser/ui/metro_pin_tab_helper.h
diff --git a/chrome/browser/ui/metro_pin_tab_helper.h b/chrome/browser/ui/metro_pin_tab_helper.h
index 23084a2fef920137992ba99e9dd549a6b759f215..9687fb3b9678fa73f94f69d1d9b0f9b4c60ec22f 100644
--- a/chrome/browser/ui/metro_pin_tab_helper.h
+++ b/chrome/browser/ui/metro_pin_tab_helper.h
@@ -8,6 +8,8 @@
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 
+class SkBitmap;
+
 // Per-tab class to help manage metro pinning.
 class MetroPinTabHelper
     : public content::WebContentsObserver,
@@ -31,6 +33,11 @@ class MetroPinTabHelper
   // Queries the metro driver about the pinned state of the current URL.
   void UpdatePinnedStateForCurrentURL();
 
+  void PinPageToStartScreen(const string16& title,
+                            const string16& url,
+                            const SkBitmap* bitmap);
+  void UnPinPageFromStartScreen();
+
   // Whether the current URL is pinned to the metro start screen.
   bool is_pinned_;