Rename NotificationUIManagerMac to NotificationPlatformBridgeMac

chrome/browser/notifications/message_center_notification_manager.cc

Index: chrome/browser/notifications/message_center_notification_manager.cc
diff --git a/chrome/browser/notifications/message_center_notification_manager.cc b/chrome/browser/notifications/message_center_notification_manager.cc
index b004ccfc3ae5db8986b5fce50c0efe89bd62748a..7e0575eaeecf657258f377f3c2da8c032aae533d 100644
--- a/chrome/browser/notifications/message_center_notification_manager.cc
+++ b/chrome/browser/notifications/message_center_notification_manager.cc
@@ -44,15 +44,6 @@
 #include "ash/system/web_notification/web_notification_tray.h"
 #endif
 
-// Mac does support native notifications and defines this method
-// in notification_ui_manager_mac.mm
-#if !defined(OS_MACOSX)
-// static
-NotificationUIManager*
-NotificationUIManager::CreateNativeNotificationManager() {
-  return nullptr;
-}
-#endif
 
 MessageCenterNotificationManager::MessageCenterNotificationManager(
     message_center::MessageCenter* message_center,