Partial fix to 7028 - Pinning in Win7....

app/win_util.h

Index: app/win_util.h
===================================================================
--- app/win_util.h	(revision 21216)
+++ app/win_util.h	(working copy)
@@ -288,6 +288,11 @@
 // The thickness of an auto-hide taskbar in pixels.
 extern const int kAutoHideTaskbarThicknessPx;
 
+// Sets the application id given as the Application Model ID for the window
+// specified.  This method is used to insure that different web applications
+// do not group together on the Win7 task bar.
+void SetAppIdForWindow(const std::wstring& app_id, HWND hwnd);
+
 }  // namespace win_util
 
 #endif  // APP_WIN_UTIL_H_