Fixes crash in RemoteWindowTreeHostWin::HandleActivateDesktop

ui/aura/remote_window_tree_host_win.h

Index: ui/aura/remote_window_tree_host_win.h
diff --git a/ui/aura/remote_window_tree_host_win.h b/ui/aura/remote_window_tree_host_win.h
index 9cc7439d0103644e249c235ee910f6af1d985a3d..31a56b1ac09cffeca9ae22caf379ce2f5cedbf0e 100644
--- a/ui/aura/remote_window_tree_host_win.h
+++ b/ui/aura/remote_window_tree_host_win.h
@@ -87,13 +87,6 @@ AURA_EXPORT void HandleSelectFolder(const base::string16& title,
                                     const SelectFolderCompletion& on_success,
                                     const FileSelectionCanceled& on_failure);
 
-// Handles the activate desktop command for Metro Chrome Ash.   The |ash_exit|
-// parameter indicates whether the Ash process would be shutdown after
-// activating the desktop.
-AURA_EXPORT void HandleActivateDesktop(
-    const base::FilePath& shortcut,
-    bool ash_exit);
-
 // Handles the metro exit command.  Notifies the metro viewer to shutdown
 // gracefully.
 AURA_EXPORT void HandleMetroExit();
@@ -131,10 +124,6 @@ class AURA_EXPORT RemoteWindowTreeHostWin
   void HandleOpenURLOnDesktop(const base::FilePath& shortcut,
                               const base::string16& url);
 
-  // The |ash_exit| parameter indicates whether the Ash process would be
-  // shutdown after activating the desktop.
-  void HandleActivateDesktop(const base::FilePath& shortcut, bool ash_exit);
-
   // Notify the metro viewer that it should shut itself down.
   void HandleMetroExit();