Fixes bad code in OnViewVisibilityChanged

mojo/services/view_manager/public/cpp/lib/view_private.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_SERVICES_VIEW_MANAGER_PUBLIC_CPP_LIB_VIEW_PRIVATE_H_
 #define MOJO_SERVICES_VIEW_MANAGER_PUBLIC_CPP_LIB_VIEW_PRIVATE_H_
 
 #include "view_manager/public/cpp/view.h"
 
 namespace mojo {
@@ skipping 41 matching lines @@
     view_->LocalRemoveChild(child);
   }
   void LocalReorder(View* relative, OrderDirection direction) {
     view_->LocalReorder(relative, direction);
   }
   void LocalSetBounds(const Rect& old_bounds,
                       const Rect& new_bounds) {
     view_->LocalSetBounds(old_bounds, new_bounds);
   }
   void LocalSetDrawn(bool drawn) { view_->LocalSetDrawn(drawn); }
+  void LocalSetVisible(bool visible) { view_->LocalSetVisible(visible); }
 
  private:
   View* view_;
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(ViewPrivate);
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_VIEW_MANAGER_PUBLIC_CPP_LIB_VIEW_PRIVATE_H_