[win8] Force browsers created with Chrome in Metro mode to be on the Ash desktop.

ui/aura/remote_root_window_host_win.h

Index: ui/aura/remote_root_window_host_win.h
diff --git a/ui/aura/remote_root_window_host_win.h b/ui/aura/remote_root_window_host_win.h
index d0c591075a6ce3613432e22a937692271c8d004f..c1680a0b424244ea21c498b8f43ddd00ff38b92b 100644
--- a/ui/aura/remote_root_window_host_win.h
+++ b/ui/aura/remote_root_window_host_win.h
@@ -142,6 +142,10 @@ class AURA_EXPORT RemoteRootWindowHostWin : public RootWindowHost {
   // Returns the active ASH root window.
   Window* GetAshWindow();
 
+  // Returns true if the remote window is the foreground window according to the
+  // OS.
+  bool IsForegroundWindow();
+
  private:
   explicit RemoteRootWindowHostWin(const gfx::Rect& bounds);
   virtual ~RemoteRootWindowHostWin();