Move overflow indicator to notifiction header.

ui/message_center/views/notification_header_view.cc

 // Copyright 2017 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/notification_header_view.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/color_palette.h"
@@ skipping 129 matching lines @@
   app_icon_view_->SetImage(img);
 }
 
 void NotificationHeaderView::SetAppName(const base::string16& name) {
   app_name_view_->SetText(name);
 }
 
 void NotificationHeaderView::SetProgress(int progress) {
   summary_text_view_->SetText(l10n_util::GetStringFUTF16Int(
       IDS_MESSAGE_CENTER_NOTIFICATION_PROGRESS_PERCENTAGE, progress));
-  has_summary_text_ = true;
+  has_progress_ = true;
   UpdateSummaryTextVisibility();
 }
 
 void NotificationHeaderView::ClearProgress() {
-  has_summary_text_ = false;
+  has_progress_ = false;
   UpdateSummaryTextVisibility();
 }
 
+void NotificationHeaderView::SetOverflowIndicator(int count) {
+  if (count > 0) {
+    summary_text_view_->SetText(l10n_util::GetStringFUTF16Int(
+        IDS_MESSAGE_CENTER_LIST_NOTIFICATION_HEADER_OVERFLOW_INDICATOR, count));
+    has_overflow_indicator_ = true;
+  } else {
+    has_overflow_indicator_ = false;
+  }
+  UpdateSummaryTextVisibility();
+}
+
+void NotificationHeaderView::ClearOverflowIndicator() {
+  has_overflow_indicator_ = false;
+  UpdateSummaryTextVisibility();
+}
+
 void NotificationHeaderView::SetExpandButtonEnabled(bool enabled) {
   expand_button_->SetVisible(enabled);
 }
 
 void NotificationHeaderView::SetExpanded(bool expanded) {
   expand_button_->SetImage(
       views::Button::STATE_NORMAL,
       gfx::CreateVectorIcon(
           expanded ? kNotificationExpandLessIcon : kNotificationExpandMoreIcon,
           kExpandIconSize, gfx::kChromeIconGrey));
@@ skipping 58 matching lines @@
 
 void NotificationHeaderView::UpdateControlButtonsVisibility() {
   settings_button_->SetVisible(settings_button_enabled_ &&
                                is_control_buttons_visible_);
   close_button_->SetVisible(close_button_enabled_ &&
                             is_control_buttons_visible_);
   Layout();
 }
 
 void NotificationHeaderView::UpdateSummaryTextVisibility() {
-  summary_text_divider_->SetVisible(has_summary_text_);
-  summary_text_view_->SetVisible(has_summary_text_);
+  const bool visible = has_progress_ || has_overflow_indicator_;
+  summary_text_divider_->SetVisible(visible);
+  summary_text_view_->SetVisible(visible);
   Layout();
 }
 
 }  // namespace message_center