Make aura work with mus

ui/aura/window_delegate.cc

Index: ui/aura/window_delegate.cc
diff --git a/components/tracing/test/example_proto/upper_import.proto b/ui/aura/window_delegate.cc
similarity index 58%
copy from components/tracing/test/example_proto/upper_import.proto
copy to ui/aura/window_delegate.cc
index c948d2e8b1f52b0da523b83acb5fbfd45544c3ea..c3503d82764265876b1648cbf833094348b41672 100644
--- a/components/tracing/test/example_proto/upper_import.proto
+++ b/ui/aura/window_delegate.cc
@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-syntax = "proto2";
-option optimize_for = LITE_RUNTIME;
+#include "ui/aura/window_delegate.h"
 
-package foo.bar;
+namespace aura {
 
-message TrickyPublicImport {
-}
+void WindowDelegate::OnRequestClose() {}
+
+}  // namespace aura