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

ash/wm/overview/window_selector_panels.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/wm/overview/window_selector_panels.h"
 
 #include "ash/screen_ash.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/overview/scoped_transform_overview_window.h"
@@ skipping 79 matching lines @@
 WindowSelectorPanels::WindowSelectorPanels() {
 }
 
 WindowSelectorPanels::~WindowSelectorPanels() {
 }
 
 void WindowSelectorPanels::AddWindow(aura::Window* window) {
   transform_windows_.push_back(new ScopedTransformPanelWindow(window));
 }
 
-aura::RootWindow* WindowSelectorPanels::GetRootWindow() {
+aura::Window* WindowSelectorPanels::GetRootWindow() {
   return transform_windows_.front()->window()->GetRootWindow();
 }
 
 aura::Window* WindowSelectorPanels::TargetedWindow(const aura::Window* target) {
   for (WindowList::const_iterator iter = transform_windows_.begin();
        iter != transform_windows_.end(); ++iter) {
     if ((*iter)->Contains(target))
       return (*iter)->window();
   }
   return NULL;
@@ skipping 28 matching lines @@
   return transform_windows_.empty();
 }
 
 void WindowSelectorPanels::PrepareForOverview() {
   for (WindowList::iterator iter = transform_windows_.begin();
        iter != transform_windows_.end(); ++iter) {
     (*iter)->PrepareForOverview();
   }
 }
 
-void WindowSelectorPanels::SetItemBounds(aura::RootWindow* root_window,
+void WindowSelectorPanels::SetItemBounds(aura::Window* root_window,
                                          const gfx::Rect& target_bounds,
                                          bool animate) {
   gfx::Rect bounding_rect;
   for (WindowList::iterator iter = transform_windows_.begin();
        iter != transform_windows_.end(); ++iter) {
     bounding_rect.Union((*iter)->GetBoundsInScreen());
   }
   set_bounds(ScopedTransformOverviewWindow::
       ShrinkRectToFitPreservingAspectRatio(bounding_rect, target_bounds));
   gfx::Transform bounding_transform =
       ScopedTransformOverviewWindow::GetTransformForRect(bounding_rect,
                                                          bounds());
   for (WindowList::iterator iter = transform_windows_.begin();
        iter != transform_windows_.end(); ++iter) {
     gfx::Transform transform;
     gfx::Rect bounds = (*iter)->GetBoundsInScreen();
     transform.Translate(bounding_rect.x() - bounds.x(),
                         bounding_rect.y() - bounds.y());
     transform.PreconcatTransform(bounding_transform);
     transform.Translate(bounds.x() - bounding_rect.x(),
                         bounds.y() - bounding_rect.y());
     (*iter)->SetTransform(root_window, transform, animate);
   }
 }
 
 }  // namespace ash