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

components/mus/public/cpp/tests/window_tree_client_impl_unittest.cc

 // Copyright 2015 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 <stdint.h>
 
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 63 matching lines @@
  private:
   WindowTreeClientImpl* tree_client_impl_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTreeClientImplPrivate);
 };
 
 class WindowTreeSetup {
  public:
   WindowTreeSetup() : tree_client_(&window_tree_delegate_, nullptr, nullptr) {
     WindowTreeClientImplPrivate(&tree_client_)
-        .Init(&window_tree_, mojom::WindowTree::ACCESS_POLICY_DEFAULT);
+        .Init(&window_tree_, mojom::WindowTree::kAccessPolicyDefault);
     window_tree_.GetAndClearChangeId(nullptr);
   }
 
   WindowTreeConnection* window_tree_connection() {
     return static_cast<WindowTreeConnection*>(&tree_client_);
   }
 
   mojom::WindowTreeClient* window_tree_client() {
     return static_cast<mojom::WindowTreeClient*>(&tree_client_);
   }
@@ skipping 385 matching lines @@
   // ToggleVisibilityFromDestroyedObserver::OnWindowDestroyed(), which toggles
   // the visibility of the window. Ack the change, which should not crash or
   // trigger DCHECKs.
   child1->Destroy();
   uint32_t change_id;
   ASSERT_TRUE(setup.window_tree()->GetAndClearChangeId(&change_id));
   setup.window_tree_client()->OnChangeCompleted(change_id, true);
 }
 
 }  // namespace mus