Implement ui::ClipboardMus.

ui/views/mus/window_manager_connection.h

 // 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.
 
 #ifndef UI_VIEWS_MUS_WINDOW_MANAGER_CONNECTION_H_
 #define UI_VIEWS_MUS_WINDOW_MANAGER_CONNECTION_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "components/mus/public/cpp/window_tree_delegate.h"
 #include "services/shell/public/cpp/identity.h"
 #include "ui/views/mus/mus_export.h"
 #include "ui/views/mus/screen_mus_delegate.h"
 #include "ui/views/widget/widget.h"
 
 namespace shell {
 class Connector;
 }
 
 namespace views {
+class ClipboardMus;
 class NativeWidget;
 class PointerWatcher;
 class ScreenMus;
 namespace internal {
 class NativeWidgetDelegate;
 }
 
 // Provides configuration to mus in views. This consists of the following:
 // . Provides a Screen implementation backed by mus.
+// . Provides a Clipboard implementation backed by mus.
 // . Creates and owns a WindowTreeConnection.
 // . Registers itself as the factory for creating NativeWidgets so that a
 //   NativeWidgetMus is created.
 // WindowManagerConnection is a singleton and should be created early on.
 //
 // TODO(sky): this name is now totally confusing. Come up with a better one.
 class VIEWS_MUS_EXPORT WindowManagerConnection
     : public NON_EXPORTED_BASE(mus::WindowTreeDelegate),
       public ScreenMusDelegate {
  public:
@@ skipping 43 matching lines @@
   std::unique_ptr<mus::WindowTreeConnection> window_tree_connection_;
   // Must be empty on destruction.
   base::ObserverList<PointerWatcher, true> pointer_watchers_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManagerConnection);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_MUS_WINDOW_MANAGER_CONNECTION_H_