Mandoline UI Process: Update namespaces and file names

components/mus/focus_controller_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/focus_controller.h"
 
 #include "components/mus/focus_controller_delegate.h"
 #include "components/mus/server_view.h"
 #include "components/mus/test_server_view_delegate.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-namespace view_manager {
+namespace mus {
 namespace {
 
 class TestFocusControllerDelegate : public FocusControllerDelegate {
  public:
   TestFocusControllerDelegate()
       : change_count_(0u),
         old_focused_view_(nullptr),
         new_focused_view_(nullptr) {}
 
   void ClearAll() {
@@ skipping 74 matching lines @@
   EXPECT_EQ(0u, focus_delegate.change_count());
 
   // Hide the parent of the focused view.
   child.SetVisible(false);
   EXPECT_EQ(1u, focus_delegate.change_count());
   EXPECT_EQ(&root, focus_delegate.new_focused_view());
   EXPECT_EQ(&child_child, focus_delegate.old_focused_view());
   focus_delegate.ClearAll();
 }
 
-}  // namespace view_manager
+}  // namespace mus