Switch Windows to use the MessagePopupCollection

ui/message_center/views/message_popup_collection.cc

 // Copyright (c) 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 "ui/message_center/views/message_popup_collection.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/timer.h"
@@ skipping 128 matching lines @@
 
 void MessagePopupCollection::UpdatePopups() {
   NotificationList::PopupNotifications popups =
       message_center_->notification_list()->GetPopupNotifications();
 
   if (popups.empty()) {
     CloseAllWidgets();
     return;
   }
 
+  gfx::Rect work_area;
+#if defined(OS_WIN) && defined(USE_AURA)
+  // On Win+Aura, we don't have a context since the popups currently show up on
+  // the Windows desktop, not in the Aura/Ash desktop.  This code will display
+  // the popups on the primary display.
+  gfx::Screen* screen = gfx::Screen::GetNativeScreen();
+  work_area = screen->GetPrimaryDisplay().work_area();
+#else
   gfx::Screen* screen = gfx::Screen::GetScreenFor(context_);
-  gfx::Rect work_area = screen->GetDisplayNearestWindow(context_).work_area();
+  work_area = screen->GetDisplayNearestWindow(context_).work_area();
+#endif
 
   std::set<std::string> old_toast_ids;
   for (ToastContainer::iterator iter = toasts_.begin(); iter != toasts_.end();
        ++iter) {
     old_toast_ids.insert(iter->first);
   }
 
   int bottom = work_area.bottom() - kMarginBetweenItems;
   int left = work_area.right() - kWebNotificationWidth - kMarginBetweenItems;
   // Iterate in the reverse order to keep the oldest toasts on screen. Newer
@@ skipping 85 matching lines @@
       message_center_->notification_list()->MarkSinglePopupAsShown(
           iter->first, false);
       toasts_.erase(iter);
       break;
     }
   }
   UpdatePopups();
 }
 
 }  // namespace message_center