Introduce ui/wm/ directory.

ui/shell/minimal_shell.h

-// Copyright 2013 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_SHELL_MINIMAL_SHELL_H_
-#define UI_SHELL_MINIMAL_SHELL_H_
-
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "ui/aura/client/window_tree_client.h"
-
-namespace aura {
-class RootWindow;
-class Window;
-namespace client {
-class DefaultActivationClient;
-class DefaultCaptureClient;
-class FocusClient;
-}  // class client
-}  // class aura
-
-namespace gfx {
-class Rect;
-class Size;
-}  // class gfx
-
-namespace views {
-namespace corewm {
-class CompoundEventFilter;
-class InputMethodEventFilter;
-}  // corewm
-}  // views
-
-namespace shell {
-
-// Creates a minimal environment for running the shell. We can't pull in all of
-// ash here, but we can create attach several of the same things we'd find in
-// the ash parts of the code.
-class MinimalShell : public aura::client::WindowTreeClient {
- public:
-  explicit MinimalShell(const gfx::Size& default_window_size);
-  virtual ~MinimalShell();
-
-  aura::RootWindow* root_window() { return root_window_.get(); }
-
-  // Overridden from client::WindowTreeClient:
-  virtual aura::Window* GetDefaultParent(aura::Window* context,
-                                         aura::Window* window,
-                                         const gfx::Rect& bounds) OVERRIDE;
-
- private:
-  scoped_ptr<aura::RootWindow> root_window_;
-
-  // Owned by RootWindow
-  views::corewm::CompoundEventFilter* root_window_event_filter_;
-
-  scoped_ptr<aura::client::DefaultCaptureClient> capture_client_;
-  scoped_ptr<views::corewm::InputMethodEventFilter> input_method_filter_;
-  scoped_ptr<aura::client::DefaultActivationClient> activation_client_;
-  scoped_ptr<aura::client::FocusClient> focus_client_;
-
-  DISALLOW_COPY_AND_ASSIGN(MinimalShell);
-};
-
-}  // namespace shell
-
-#endif  // UI_SHELL_MINIMAL_SHELL_H_