Moves maintaining root_window_for_new_windows_ to Shell

ash/sticky_keys/sticky_keys_overlay.cc

 // Copyright 2014 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/sticky_keys/sticky_keys_overlay.h"
 
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/shell.h"
 #include "ash/sticky_keys/sticky_keys_controller.h"
 #include "ash/strings/grit/ash_strings.h"
@@ skipping 196 matching lines @@
       overlay_view_(new StickyKeysOverlayView),
       widget_size_(overlay_view_->GetPreferredSize()) {
   views::Widget::InitParams params;
   params.type = views::Widget::InitParams::TYPE_POPUP;
   params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   params.accept_events = false;
   params.keep_on_top = true;
   params.remove_standard_frame = true;
   params.bounds = CalculateOverlayBounds();
-  params.parent = Shell::GetContainer(Shell::GetTargetRootWindow(),
+  params.parent = Shell::GetContainer(Shell::GetRootWindowForNewWindows(),
                                       kShellWindowId_OverlayContainer);
   overlay_widget_.reset(new views::Widget);
   overlay_widget_->Init(params);
   overlay_widget_->SetVisibilityChangedAnimationsEnabled(false);
   overlay_widget_->SetContentsView(overlay_view_.get());
   overlay_widget_->GetNativeView()->SetName("StickyKeysOverlay");
 }
 
 StickyKeysOverlay::~StickyKeysOverlay() {
   // Remove ourself from the animator to avoid being re-entrantly called in
@@ skipping 78 matching lines @@
     ui::LayerAnimationSequence* sequence) {
   ui::LayerAnimator* animator = overlay_widget_->GetLayer()->GetAnimator();
   if (animator)
     animator->RemoveObserver(this);
 }
 
 void StickyKeysOverlay::OnLayerAnimationScheduled(
     ui::LayerAnimationSequence* sequence) {}
 
 }  // namespace ash