[exp] ash: sysui for mash

ash/system/web_notification/ash_popup_alignment_delegate.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/system/web_notification/ash_popup_alignment_delegate.h"
 
 #include "ash/display/window_tree_host_manager.h"
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shelf/shelf_layout_manager.h"
@@ skipping 15 matching lines @@
 const int kToastMarginX = 3;
 
 // If there should be no margin for the first item, this value needs to be
 // substracted to flush the message to the shelf (the width of the border +
 // shadow).
 const int kNoToastMarginBorderAndShadowOffset = 2;
 
 }
 
 AshPopupAlignmentDelegate::AshPopupAlignmentDelegate(ShelfLayoutManager* shelf)
-    : screen_(NULL), root_window_(NULL), shelf_(shelf), system_tray_height_(0) {
+    : screen_(NULL), shelf_(shelf), system_tray_height_(0) {
   shelf_->AddObserver(this);
 }
 
 AshPopupAlignmentDelegate::~AshPopupAlignmentDelegate() {
   if (screen_)
     screen_->RemoveObserver(this);
   Shell::GetInstance()->RemoveShellObserver(this);
   shelf_->RemoveObserver(this);
 }
 
 void AshPopupAlignmentDelegate::StartObserving(gfx::Screen* screen,
                                                const gfx::Display& display) {
   screen_ = screen;
   work_area_ = display.work_area();
-  root_window_ = ash::Shell::GetInstance()
-                     ->window_tree_host_manager()
-                     ->GetRootWindowForDisplayId(display.id());
   screen->AddObserver(this);
   Shell::GetInstance()->AddShellObserver(this);
   if (system_tray_height_ > 0)
     UpdateWorkArea();
 }
 
 void AshPopupAlignmentDelegate::SetSystemTrayHeight(int height) {
   system_tray_height_ = height;
 
   // If the shelf is shown during auto-hide state, the distance from the edge
@@ skipping 85 matching lines @@
 }
 
 void AshPopupAlignmentDelegate::OnDisplayMetricsChanged(
     const gfx::Display& display,
     uint32_t metrics) {
   if (GetCurrentDisplay().id() == display.id())
     UpdateWorkArea();
 }
 
 }  // namespace ash