Change mojo enums to be scoped enums in the generated C++ bindings.

components/mus/public/cpp/lib/window_tree_client_impl.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/mus/public/cpp/lib/window_tree_client_impl.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 376 matching lines @@
 }
 
 void WindowTreeClientImpl::OnEmbedImpl(mojom::WindowTree* window_tree,
                                        ConnectionSpecificId connection_id,
                                        mojom::WindowDataPtr root_data,
                                        Id focused_window_id,
                                        uint32_t access_policy) {
   tree_ = window_tree;
   connection_id_ = connection_id;
   is_embed_root_ =
-      (access_policy & mojom::WindowTree::ACCESS_POLICY_EMBED_ROOT) != 0;
+      (access_policy & mojom::WindowTree::kAccessPolicyEmbedRoot) != 0;
 
   DCHECK(!root_);
   root_ = AddWindowToConnection(this, nullptr, root_data);
 
   focused_window_ = GetWindowById(focused_window_id);
 
   delegate_->OnEmbed(root_);
 
   if (focused_window_) {
     FOR_EACH_OBSERVER(WindowTreeConnectionObserver, observers_,
@@ skipping 344 matching lines @@
     if (result) {
       // If the resulting bounds differ return false. Returning false ensures
       // the client applies the bounds we set below.
       window->SetSharedPropertyInternal(name, data.get());
     }
   }
   window_manager_internal_client_->WmResponse(change_id, result);
 }
 
 }  // namespace mus