Use container::back() and container::pop_back() in ui/

ui/message_center/views/notification_view.cc

 // Copyright (c) 2012 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_view.h"
 
 #include <stddef.h>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 77 matching lines @@
                                                    SkColor color) {
   return views::Border::CreateSolidSidedBorder(top, left, 0, 0, color);
 }
 
 // ItemView ////////////////////////////////////////////////////////////////////
 
 // ItemViews are responsible for drawing each list notification item's title and
 // message next to each other within a single column.
 class ItemView : public views::View {
  public:
-  ItemView(const message_center::NotificationItem& item);
+  explicit ItemView(const message_center::NotificationItem& item);
   ~ItemView() override;
 
   // Overridden from views::View:
   void SetVisible(bool visible) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ItemView);
 };
 
 ItemView::ItemView(const message_center::NotificationItem& item) {
@@ skipping 319 matching lines @@
     message_view_ = new BoundedLabel(text);
     message_view_->SetLineHeight(kMessageLineHeight);
     message_view_->SetColors(message_center::kRegularTextColor,
                              kDimTextBackgroundColor);
     message_view_->SetBorder(MakeTextBorder(padding, 4, 0));
     top_view_->AddChildView(message_view_);
   } else {
     message_view_->SetText(text);
   }
 
-  message_view_->SetVisible(!notification.items().size());
+  message_view_->SetVisible(notification.items().empty());
 }
 
 base::string16 NotificationView::FormatContextMessage(
     const Notification& notification) const {
   if (notification.UseOriginAsContextMessage()) {
     const GURL url = notification.origin_url();
     DCHECK(url.is_valid());
     return gfx::ElideText(
         url_formatter::FormatUrlForSecurityDisplay(
             url, url_formatter::SchemeDisplay::OMIT_HTTP_AND_HTTPS),
@@ skipping 89 matching lines @@
       progress_bar_view_ = new NotificationIndeterminateProgressBar();
 
     progress_bar_view_->SetBorder(MakeProgressBarBorder(
         message_center::kProgressBarTopPadding, kProgressBarBottomPadding));
     top_view_->AddChildView(progress_bar_view_);
   }
 
   if (!is_indeterminate)
     progress_bar_view_->SetValue(notification.progress() / 100.0);
 
-  progress_bar_view_->SetVisible(!notification.items().size());
+  progress_bar_view_->SetVisible(notification.items().empty());
 }
 
 void NotificationView::CreateOrUpdateListItemViews(
     const Notification& notification) {
   for (size_t i = 0; i < item_views_.size(); ++i)
     delete item_views_[i];
   item_views_.clear();
 
   int padding = kMessageLineHeight - views::Label().font_list().GetHeight();
   std::vector<NotificationItem> items = notification.items();
@@ skipping 152 matching lines @@
 
   return message_line_limit;
 }
 
 int NotificationView::GetMessageHeight(int width, int limit) const {
   return message_view_ ?
          message_view_->GetSizeForWidthAndLines(width, limit).height() : 0;
 }
 
 }  // namespace message_center