Make GetRootWindow() return a Window instead of a RootWindow.

ash/autoclick/autoclick_controller.cc

 // 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.
 
 #include "ash/autoclick/autoclick_controller.h"
 
 #include "ash/shell.h"
 #include "ash/wm/coordinate_conversion.h"
 #include "base/timer/timer.h"
 #include "ui/aura/env.h"
@@ skipping 136 matching lines @@
   mouse_event_flags_ = (mouse_event_flags_ & ~modifier_mask) | new_modifiers;
 }
 
 void AutoclickControllerImpl::OnTouchEvent(ui::TouchEvent* event) {
   autoclick_timer_->Stop();
 }
 
 void AutoclickControllerImpl::DoAutoclick() {
   gfx::Point screen_location =
       aura::Env::GetInstance()->last_mouse_location();
-  aura::RootWindow* root_window = wm::GetRootWindowAt(screen_location);
+  aura::Window* root_window = wm::GetRootWindowAt(screen_location);
   DCHECK(root_window) << "Root window not found while attempting autoclick.";
 
   gfx::Point click_location(screen_location);
   anchor_location_ = click_location;
   wm::ConvertPointFromScreen(root_window, &click_location);
-  root_window->ConvertPointToHost(&click_location);
+
+  aura::WindowEventDispatcher* dispatcher = root_window->GetDispatcher();
+  dispatcher->ConvertPointToHost(&click_location);
 
   ui::MouseEvent press_event(ui::ET_MOUSE_PRESSED,
                              click_location,
                              click_location,
                              mouse_event_flags_ | ui::EF_LEFT_MOUSE_BUTTON);
   ui::MouseEvent release_event(ui::ET_MOUSE_RELEASED,
                                click_location,
                                click_location,
                                mouse_event_flags_ | ui::EF_LEFT_MOUSE_BUTTON);
 
-  root_window->AsRootWindowHostDelegate()->OnHostMouseEvent(&press_event);
-  root_window->AsRootWindowHostDelegate()->OnHostMouseEvent(&release_event);
+  dispatcher->AsRootWindowHostDelegate()->OnHostMouseEvent(&press_event);
+  dispatcher->AsRootWindowHostDelegate()->OnHostMouseEvent(&release_event);
 }
 
 // static.
 AutoclickController* AutoclickController::CreateInstance() {
   return new AutoclickControllerImpl();
 }
 
 }  // namespace ash