Mandoline UI Process: Update namespaces and file names

components/mus/view_locator.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/view_locator.h"
 
 #include "components/mus/server_view.h"
 
-namespace view_manager {
+namespace mus {
 
 const ServerView* FindDeepestVisibleView(const ServerView* view,
                                          const gfx::Point& location) {
   for (const ServerView* child : view->GetChildren()) {
     if (!child->visible())
       continue;
 
     // TODO(sky): support transform.
     const gfx::Point child_location(location.x() - child->bounds().x(),
                                     location.y() - child->bounds().y());
     if (child_location.x() >= 0 && child_location.y() >= 0 &&
         child_location.x() < child->bounds().width() &&
         child_location.y() < child->bounds().height()) {
       return FindDeepestVisibleView(child, child_location);
     }
   }
   return view;
 }
 
 ServerView* FindDeepestVisibleView(ServerView* view,
                                    const gfx::Point& location) {
   return const_cast<ServerView*>(
       FindDeepestVisibleView(const_cast<const ServerView*>(view), location));
 }
 
-}  // namespace view_manager
+}  // namespace mus