Mandoline UI Process: Update namespaces and file names

components/mus/public/cpp/lib/view_private.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/view_private.h"
 
-namespace mojo {
+namespace mus {
 
 ViewPrivate::ViewPrivate(View* view) : view_(view) {
   CHECK(view);
 }
 
 ViewPrivate::~ViewPrivate() {}
 
 // static
 View* ViewPrivate::LocalCreate() {
   return new View;
 }
 
-}  // namespace mojo
+}  // namespace mus