mash: Remove last WmWindow uses in ash/shelf.

ash/shelf/overflow_bubble_view.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/shelf/overflow_bubble_view.h"
 
 #include <algorithm>
 
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/root_window_controller.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shell.h"
-#include "ash/wm_window.h"
 #include "base/i18n/rtl.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/events/event.h"
 #include "ui/gfx/geometry/insets.h"
 #include "ui/views/bubble/bubble_frame_view.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
@@ skipping 131 matching lines @@
 }
 
 int OverflowBubbleView::GetDialogButtons() const {
   return ui::DIALOG_BUTTON_NONE;
 }
 
 void OverflowBubbleView::OnBeforeBubbleWidgetInit(
     views::Widget::InitParams* params,
     views::Widget* bubble_widget) const {
   // Place the bubble in the same root window as the anchor.
-  WmWindow::Get(anchor_widget()->GetNativeWindow())
-      ->GetRootWindowController()
+  RootWindowController::ForWindow(anchor_widget()->GetNativeWindow())
       ->ConfigureWidgetInitParamsForContainer(
           bubble_widget, kShellWindowId_ShelfBubbleContainer, params);
 }
 
 gfx::Rect OverflowBubbleView::GetBubbleBounds() {
   const gfx::Size content_size = GetPreferredSize();
   const gfx::Rect anchor_rect = GetAnchorRect();
   gfx::Rect monitor_rect =
       display::Screen::GetScreen()
           ->GetDisplayNearestPoint(anchor_rect.CenterPoint())
@@ skipping 24 matching lines @@
   else if (bounds.bottom() > monitor_rect.bottom())
     bounds.Offset(monitor_rect.bottom() - bounds.bottom(), 0);
   return bounds;
 }
 
 void OverflowBubbleView::UpdateShelfBackground(SkColor color) {
   set_color(color);
 }
 
 }  // namespace ash