Block keyboard and mouse input when maximize mode is activated by accelerometer.

ui/aura/scoped_window_targeter.h

Index: ui/aura/scoped_window_targeter.h
diff --git a/ui/aura/scoped_window_targeter.h b/ui/aura/scoped_window_targeter.h
index ce65092e8696323a060712df5f549afda2a19c83..f8546c57d0e0521979809045208b83ea20f3d19e 100644
--- a/ui/aura/scoped_window_targeter.h
+++ b/ui/aura/scoped_window_targeter.h
@@ -27,6 +27,10 @@ class AURA_EXPORT ScopedWindowTargeter : public WindowObserver {
 
   virtual ~ScopedWindowTargeter();
 
+  ui::EventTargeter* old_targeter() {
+    return old_targeter_.get();
+  }
+
  private:
   // WindowObserver:
   virtual void OnWindowDestroyed(Window* window) OVERRIDE;