content: Remove views dependency.

services/ui/public/cpp/window.h

 // 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.
 
 #ifndef SERVICES_UI_PUBLIC_CPP_WINDOW_H_
 #define SERVICES_UI_PUBLIC_CPP_WINDOW_H_
 
 #include <stdint.h>
 #include <vector>
 
@@ skipping 24 matching lines @@
 class WindowTreeClientPrivate;
 
 namespace {
 class OrderChangedNotifier;
 }
 
 // Defined in window_property.h (which we do not include)
 template <typename T>
 struct WindowProperty;
 
+extern const char UI_EXPORT kWindowForAcceleratedWidget[];
+
 // Windows are owned by the WindowTreeClient. See WindowTreeClientDelegate for
 // details on ownership.
 //
 // TODO(beng): Right now, you'll have to implement a WindowObserver to track
 //             destruction and NULL any pointers you have.
 //             Investigate some kind of smart pointer or weak pointer for these.
 class UI_EXPORT Window {
  public:
   using Children = std::vector<Window*>;
   using EmbedCallback = base::Callback<void(bool)>;
@@ skipping 310 matching lines @@
   };
 
   std::map<const void*, Value> prop_map_;
 
   DISALLOW_COPY_AND_ASSIGN(Window);
 };
 
 }  // namespace ui
 
 #endif  // SERVICES_UI_PUBLIC_CPP_WINDOW_H_