arc: Make ChromeVox read an ARC custom notification

ui/arc/notification/arc_custom_notification_view.cc

 // Copyright 2016 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/arc/notification/arc_custom_notification_view.h"
 
 #include "components/exo/notification_surface.h"
 #include "components/exo/surface.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/compositor/layer_animation_observer.h"
 #include "ui/display/screen.h"
 #include "ui/events/event_handler.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/transform.h"
 #include "ui/message_center/message_center_style.h"
+#include "ui/message_center/views/custom_notification_view.h"
 #include "ui/resources/grit/ui_resources.h"
 #include "ui/strings/grit/ui_strings.h"
 #include "ui/views/background.h"
 #include "ui/views/border.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/widget/widget.h"
 #include "ui/wm/core/window_util.h"
 
 namespace arc {
 
@@ skipping 255 matching lines @@
   if (!GetWidget())
     return;
 
   UpdatePreferredSize();
   Attach(surface_->window());
 
   // Creates slide helper after this view is added to its parent.
   slide_helper_.reset(new SlideHelper(this));
 }
 
+void ArcCustomNotificationView::UpdateAccessibleName() {
+  DCHECK(parent() != nullptr);
+  static_cast<message_center::CustomNotificationView *>(
+          parent())->set_accessible_name(item_->accessibile_name());
+}
+
 void ArcCustomNotificationView::ViewHierarchyChanged(
     const views::View::ViewHierarchyChangedDetails& details) {
   views::Widget* widget = GetWidget();
 
   if (!details.is_add) {
     // Resets slide helper when this view is removed from its parent.
     slide_helper_.reset();
   }
 
   // Bail if native_view() has attached to a different widget.
   if (widget && native_view() &&
       views::Widget::GetTopLevelWidgetForNativeView(native_view()) != widget) {
     return;
   }
 
   views::NativeViewHost::ViewHierarchyChanged(details);
 
   if (!widget || !surface_ || !details.is_add)
     return;
 
+  UpdateAccessibleName();
   AttachSurface();
 }
 
 void ArcCustomNotificationView::Layout() {
   views::NativeViewHost::Layout();
 
   if (!surface_ || !GetWidget())
     return;
 
   // Scale notification surface if necessary.
@@ skipping 94 matching lines @@
 
 void ArcCustomNotificationView::OnNotificationSurfaceRemoved(
     exo::NotificationSurface* surface) {
   if (surface->notification_id() != notification_key_)
     return;
 
   SetSurface(nullptr);
 }
 
 }  // namespace arc