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

ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc

 // 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.
 
 #include "ui/views/widget/desktop_aura/desktop_window_tree_host_win.h"
 
 #include "base/win/metro.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/aura_constants.h"
@@ skipping 431 matching lines @@
 
 void DesktopWindowTreeHostWin::Show() {
   message_handler_->Show();
 }
 
 void DesktopWindowTreeHostWin::Hide() {
   if (!pending_close_)
     message_handler_->Hide();
 }
 
-void DesktopWindowTreeHostWin::ToggleFullScreen() {
-  SetWindowTransparency();
-}
-
 // GetBounds and SetBounds work in pixel coordinates, whereas other get/set
 // methods work in DIP.
 
 gfx::Rect DesktopWindowTreeHostWin::GetBounds() const {
   gfx::Rect bounds(message_handler_->GetClientAreaBounds());
   // If the window bounds were expanded we need to return the original bounds
   // To achieve this we do the reverse of the expansion, i.e. add the
   // window_expansion_top_left_delta_ to the origin and subtract the
   // window_expansion_bottom_right_delta_ from the width and height.
   gfx::Rect without_expansion(
@@ skipping 27 matching lines @@
       gfx::Vector2d(new_expanded.width() - expanded.width(),
                     new_expanded.height() - expanded.height());
   message_handler_->SetBounds(new_expanded);
 
   // The client area size may have changed even though the window bounds have
   // not, if the window bounds were expanded to 64 pixels both times.
   if (old_hwnd_size == new_expanded.size() && old_content_size != bounds.size())
     HandleClientSizeChanged(new_expanded.size());
 }
 
-gfx::Insets DesktopWindowTreeHostWin::GetInsets() const {
-  return gfx::Insets();
-}
-
-void DesktopWindowTreeHostWin::SetInsets(const gfx::Insets& insets) {
-}
-
 gfx::Point DesktopWindowTreeHostWin::GetLocationOnNativeScreen() const {
   return GetBounds().origin();
 }
 
 void DesktopWindowTreeHostWin::SetCapture() {
   message_handler_->SetCapture();
 }
 
 void DesktopWindowTreeHostWin::ReleaseCapture() {
   message_handler_->ReleaseCapture();
 }
 
 bool DesktopWindowTreeHostWin::QueryMouseLocation(gfx::Point* location_return) {
   aura::client::CursorClient* cursor_client =
       aura::client::GetCursorClient(window());
   if (cursor_client && !cursor_client->IsMouseEventsEnabled()) {
     *location_return = gfx::Point(0, 0);
     return false;
   }
   POINT pt = {0};
   ::GetCursorPos(&pt);
   *location_return =
       gfx::Point(static_cast<int>(pt.x), static_cast<int>(pt.y));
   return true;
 }
 
-bool DesktopWindowTreeHostWin::ConfineCursorToRootWindow() {
-  RECT window_rect = window()->GetBoundsInScreen().ToRECT();
-  ::ClipCursor(&window_rect);
-  return true;
-}
-
-void DesktopWindowTreeHostWin::UnConfineCursor() {
-  ::ClipCursor(NULL);
-}
-
 void DesktopWindowTreeHostWin::PostNativeEvent(
     const base::NativeEvent& native_event) {
 }
 
 void DesktopWindowTreeHostWin::OnDeviceScaleFactorChanged(
     float device_scale_factor) {
 }
 
 void DesktopWindowTreeHostWin::SetCursorNative(gfx::NativeCursor cursor) {
   ui::CursorLoaderWin cursor_loader;
@@ skipping 442 matching lines @@
 
 // static
 DesktopWindowTreeHost* DesktopWindowTreeHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura) {
   return new DesktopWindowTreeHostWin(native_widget_delegate,
                                       desktop_native_widget_aura);
 }
 
 }  // namespace views