Add a startup check to create profile shortcuts for legacy Chrome profiles.

chrome/browser/profiles/profile_shortcut_manager_win.h

Index: chrome/browser/profiles/profile_shortcut_manager_win.h
===================================================================
--- chrome/browser/profiles/profile_shortcut_manager_win.h	(revision 117854)
+++ chrome/browser/profiles/profile_shortcut_manager_win.h	(working copy)
@@ -18,6 +18,11 @@
   ProfileShortcutManagerWin();
   virtual ~ProfileShortcutManagerWin();
 
+  // Create a profile shortcut for the profile with path |profile_path|, plus
+  // update the original profile shortcut if |profile_path| is the second
+  // profile created.
+  virtual void AddProfileShortcut(const FilePath& profile_path);
+
   // ProfileInfoCacheObserver:
   virtual void OnProfileAdded(const FilePath& profile_path) OVERRIDE;
   virtual void OnProfileWillBeRemoved(