Moves common view_manager related aura files to mojo/aura

ui/aura/env.h

 // Copyright (c) 2012 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_AURA_ENV_H_
 #define UI_AURA_ENV_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
+#include "base/supports_user_data.h"
 #include "ui/aura/aura_export.h"
 #include "ui/events/event_handler.h"
 #include "ui/events/event_target.h"
 #include "ui/gfx/point.h"
 
 namespace ui {
 class ContextFactory;
 class PlatformEventSource;
 }
 namespace aura {
 
 namespace test {
 class EnvTestHelper;
 }
 
 class EnvObserver;
 class InputStateLookup;
 class Window;
 class WindowTreeHost;
 
 // A singleton object that tracks general state within Aura.
-class AURA_EXPORT Env : public ui::EventTarget {
+class AURA_EXPORT Env : public ui::EventTarget, public base::SupportsUserData {
  public:
   // Creates the single Env instance (if it hasn't been created yet). If
   // |create_event_source| is true a PlatformEventSource is created.
   // TODO(sky): nuke |create_event_source|. Only necessary while mojo's
   // nativeviewportservice lives in the same process as the viewmanager.
   static void CreateInstance(bool create_event_source);
   static Env* GetInstance();
   static void DeleteInstance();
 
   void AddObserver(EnvObserver* observer);
@@ skipping 60 matching lines @@
   scoped_ptr<ui::PlatformEventSource> event_source_;
 
   ui::ContextFactory* context_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Env);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ENV_H_