Hide popup custom notifications on non-primary displays

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/public/cpp/shelf_types.h"
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/root_window_controller.h"
 #include "ash/shelf/shelf_constants.h"
@@ skipping 104 matching lines @@
     views::Widget::InitParams* init_params) {
   init_params->shadow_type = views::Widget::InitParams::SHADOW_TYPE_DROP;
   init_params->shadow_elevation = ::wm::ShadowElevation::MEDIUM;
   // On ash, popups go in the status container.
   shelf_->GetWindow()
       ->GetRootWindowController()
       ->ConfigureWidgetInitParamsForContainer(
           widget, kShellWindowId_StatusContainer, init_params);
 }
 
+bool AshPopupAlignmentDelegate::IsPrimaryDisplayForNotification() const {
+  return screen_ &&
+         GetCurrentDisplay().id() == screen_->GetPrimaryDisplay().id();
+}
+
 ShelfAlignment AshPopupAlignmentDelegate::GetAlignment() const {
   return shelf_->GetAlignment();
 }
 
 display::Display AshPopupAlignmentDelegate::GetCurrentDisplay() const {
   return shelf_->GetWindow()->GetDisplayNearestWindow();
 }
 
 void AshPopupAlignmentDelegate::UpdateWorkArea() {
   work_area_ = shelf_->GetUserWorkAreaBounds();
@@ skipping 23 matching lines @@
     const display::Display& old_display) {}
 
 void AshPopupAlignmentDelegate::OnDisplayMetricsChanged(
     const display::Display& display,
     uint32_t metrics) {
   if (GetCurrentDisplay().id() == display.id())
     UpdateWorkArea();
 }
 
 }  // namespace ash