Nukes the windowmanager interface

components/view_manager/window_manager_access_policy.cc

 // 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.
 
 #include "components/view_manager/window_manager_access_policy.h"
 
 #include "components/view_manager/access_policy_delegate.h"
 #include "components/view_manager/server_view.h"
 
 namespace view_manager {
@@ skipping 39 matching lines @@
     const ServerView* view) const {
   return view->id() != ClonedViewId();
 }
 
 bool WindowManagerAccessPolicy::CanEmbed(const ServerView* view) const {
   return view->id().connection_id == connection_id_;
 }
 
 bool WindowManagerAccessPolicy::CanChangeViewVisibility(
     const ServerView* view) const {
-  return view->id().connection_id == connection_id_;
+  // The WindowManager can change the visibility of the root too.
+  return view->id().connection_id == connection_id_ ||
+         view->id() == RootViewId();
 }
 
 bool WindowManagerAccessPolicy::CanSetViewSurfaceId(
     const ServerView* view) const {
   if (delegate_->IsViewRootOfAnotherConnectionForAccessPolicy(view))
     return false;
   return view->id().connection_id == connection_id_ ||
          (delegate_->IsRootForAccessPolicy(view->id()));
 }
 
@@ skipping 26 matching lines @@
 const ServerView* WindowManagerAccessPolicy::GetViewForFocusChange(
     const ServerView* focused) {
   return focused;
 }
 
 bool WindowManagerAccessPolicy::IsViewKnown(const ServerView* view) const {
   return delegate_->IsViewKnownForAccessPolicy(view);
 }
 
 }  // namespace view_manager