Introdcue AshWindowTreeHost and move ash/chrome specific code in WTH to ash.

ui/aura/window_tree_host_win.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_WINDOW_TREE_HOST_WIN_H_
 #define UI_AURA_WINDOW_TREE_HOST_WIN_H_
 
 #include "base/compiler_specific.h"
 #include "ui/aura/aura_export.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/events/event_source.h"
 #include "ui/gfx/win/window_impl.h"
 
 namespace aura {
 
-class WindowTreeHostWin : public WindowTreeHost,
-                          public ui::EventSource,
-                          public gfx::WindowImpl {
+class AURA_EXPORT WindowTreeHostWin : public WindowTreeHost,
+                                      public ui::EventSource,
+                                      public gfx::WindowImpl {
  public:
-  WindowTreeHostWin(const gfx::Rect& bounds);
+  explicit WindowTreeHostWin(const gfx::Rect& bounds);
   virtual ~WindowTreeHostWin();
   // WindowTreeHost:
   virtual gfx::AcceleratedWidget GetAcceleratedWidget() OVERRIDE;
   virtual void Show() OVERRIDE;
   virtual void Hide() OVERRIDE;
-  virtual void ToggleFullScreen() OVERRIDE;
   virtual gfx::Rect GetBounds() const OVERRIDE;
   virtual void SetBounds(const gfx::Rect& bounds) OVERRIDE;
-  virtual gfx::Insets GetInsets() const OVERRIDE;
-  virtual void SetInsets(const gfx::Insets& insets) OVERRIDE;
   virtual gfx::Point GetLocationOnNativeScreen() const OVERRIDE;
   virtual void SetCapture() OVERRIDE;
   virtual void ReleaseCapture() OVERRIDE;
   virtual bool QueryMouseLocation(gfx::Point* location_return) OVERRIDE;
-  virtual bool ConfineCursorToRootWindow() OVERRIDE;
-  virtual void UnConfineCursor() OVERRIDE;
   virtual void SetCursorNative(gfx::NativeCursor cursor) OVERRIDE;
   virtual void MoveCursorToNative(const gfx::Point& location) OVERRIDE;
   virtual void OnCursorVisibilityChangedNative(bool show) OVERRIDE;
   virtual void PostNativeEvent(const base::NativeEvent& native_event) OVERRIDE;
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
 
   // ui::EventSource:
   virtual ui::EventProcessor* GetEventProcessor() OVERRIDE;
 
  private:
@@ skipping 25 matching lines @@
 
   void OnClose();
   LRESULT OnKeyEvent(UINT message, WPARAM w_param, LPARAM l_param);
   LRESULT OnMouseRange(UINT message, WPARAM w_param, LPARAM l_param);
   LRESULT OnCaptureChanged(UINT message, WPARAM w_param, LPARAM l_param);
   LRESULT OnNCActivate(UINT message, WPARAM w_param, LPARAM l_param);
   void OnMove(const gfx::Point& point);
   void OnPaint(HDC dc);
   void OnSize(UINT param, const gfx::Size& size);
 
-  bool fullscreen_;
   bool has_capture_;
-  RECT saved_window_rect_;
-  DWORD saved_window_style_;
-  DWORD saved_window_ex_style_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTreeHostWin);
 };
 
 namespace test {
 
 // Set true to let WindowTreeHostWin use a popup window
 // with no frame/title so that the window size and test's
 // expectations matches.
 AURA_EXPORT void SetUsePopupAsRootWindowForTest(bool use);
 
 }  // namespace
 
 }  // namespace aura
 
 #endif  // UI_AURA_WINDOW_TREE_HOST_WIN_H_