Add UpdateNotificationSize to MessageCenterController.

ui/message_center/views/message_list_view_unittest.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 <map>
 #include <memory>
 #include <utility>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 134 matching lines @@
       const base::string16& display_source) override {
     NOTREACHED();
     return nullptr;
   }
   bool HasClickedListener(const std::string& notification_id) override {
     return false;
   }
   void ClickOnNotificationButton(const std::string& notification_id,
                                  int button_index) override {}
   void ClickOnSettingsButton(const std::string& notification_id) override {}
+  void UpdateNotificationSize(const std::string& notification_id) override;
 
   // Widget to host a MessageListView.
   std::unique_ptr<views::Widget> widget_;
   // MessageListView to be tested.
   std::unique_ptr<MessageListView> message_list_view_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageListViewTest);
 };
 
+void MessageListViewTest::UpdateNotificationSize(
+    const std::string& notification_id) {
+  // For this test, this method should not be invoked.
+  NOTREACHED();
+}
+
 /* Unit tests *****************************************************************/
 
 TEST_F(MessageListViewTest, AddNotification) {
   // Create a dummy notification.
   auto notification_view = CreateNotificationView(
       Notification(NOTIFICATION_TYPE_SIMPLE, std::string(kNotificationId1),
                    base::UTF8ToUTF16("title"), base::UTF8ToUTF16("message1"),
                    gfx::Image(), base::UTF8ToUTF16("display source"), GURL(),
                    NotifierId(NotifierId::APPLICATION, "extension_id"),
                    message_center::RichNotificationData(), nullptr));
 
   EXPECT_EQ(0, message_list_view()->child_count());
   EXPECT_FALSE(message_list_view()->Contains(notification_view));
 
   // Add a notification.
   message_list_view()->AddNotificationAt(notification_view, 0);
 
   EXPECT_EQ(1, message_list_view()->child_count());
   EXPECT_TRUE(message_list_view()->Contains(notification_view));
 }
 
 }  // namespace