UMA for Windows 8 Secondary Tile pinning/unpinning user actions

win8/metro_driver/secondary_tile.h

Index: win8/metro_driver/secondary_tile.h
diff --git a/win8/metro_driver/secondary_tile.h b/win8/metro_driver/secondary_tile.h
index caee7e816d732f9033e949eb41ce5cf59f308cf5..b0d9a7894b7fdcff6518066933afd836423c8fea 100644
--- a/win8/metro_driver/secondary_tile.h
+++ b/win8/metro_driver/secondary_tile.h
@@ -6,18 +6,23 @@
 
 #include "base/file_path.h"
 #include "base/string16.h"
+#include "base/win/metro.h"
 
 extern "C" __declspec(dllexport)
 BOOL MetroIsPinnedToStartScreen(const string16& tile_id);
 
 extern "C" __declspec(dllexport)
-void MetroUnPinFromStartScreen(const string16& tile_id);
+void MetroUnPinFromStartScreen(const string16& tile_id,
+                               base::win::MetroPinResultCallback callback,
+                               void* callback_data);
 
 extern "C" __declspec(dllexport)
 void MetroPinToStartScreen(const string16& tile_id,
                            const string16& title,
                            const string16& url,
-                           const FilePath& logo_path);
+                           const FilePath& logo_path,
+                           base::win::MetroPinResultCallback callback,
+                           void* callback_data);
 
 #endif  // CHROME_BROWSER_UI_METRO_DRIVER_SECONDARY_TILE_H_