Removes aura dependencies from WindowPositioner

ash/system/tray/tray_background_view.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 "ash/system/tray/tray_background_view.h"
 
 #include "ash/root_window_controller.h"
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shelf/shelf_widget.h"
@@ skipping 441 matching lines @@
   gfx::Transform transform;
   if (shelf_alignment_ == SHELF_ALIGNMENT_BOTTOM)
     transform.Translate(width(), 0.0f);
   else
     transform.Translate(0.0f, height());
   layer()->SetTransform(transform);
 }
 
 void TrayBackgroundView::InitializeBubbleAnimations(
     views::Widget* bubble_widget) {
-  wm::SetWindowVisibilityAnimationType(
+  ::wm::SetWindowVisibilityAnimationType(
       bubble_widget->GetNativeWindow(),
-      wm::WINDOW_VISIBILITY_ANIMATION_TYPE_FADE);
-  wm::SetWindowVisibilityAnimationTransition(
-      bubble_widget->GetNativeWindow(),
-      wm::ANIMATE_HIDE);
-  wm::SetWindowVisibilityAnimationDuration(
+      ::wm::WINDOW_VISIBILITY_ANIMATION_TYPE_FADE);
+  ::wm::SetWindowVisibilityAnimationTransition(bubble_widget->GetNativeWindow(),
+                                               ::wm::ANIMATE_HIDE);
+  ::wm::SetWindowVisibilityAnimationDuration(
       bubble_widget->GetNativeWindow(),
       base::TimeDelta::FromMilliseconds(kAnimationDurationForPopupMs));
 }
 
 aura::Window* TrayBackgroundView::GetBubbleWindowContainer() const {
   return ash::Shell::GetContainer(
       tray_container()->GetWidget()->GetNativeWindow()->GetRootWindow(),
       ash::kShellWindowId_SettingBubbleContainer);
 }
 
@@ skipping 108 matching lines @@
     background_->set_alpha(kTrayBackgroundAlpha);
   SchedulePaint();
 }
 
 void TrayBackgroundView::UpdateBubbleViewArrow(
     views::TrayBubbleView* bubble_view) {
   // Nothing to do here.
 }
 
 }  // namespace ash