Noissue - Fix sign comparison warnings in tests.

test/Notification.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 180 matching lines @@
   ASSERT_TRUE(notification);
   notification->MarkAsShown();
   EXPECT_FALSE(PeekNotification());
 }
 
 TEST_F(NotificationTest, NoLinks)
 {
   AddNotification("{ id: 'id'}");
   NotificationPtr notification = PeekNotification();
   ASSERT_TRUE(notification);
-  EXPECT_EQ(0, notification->GetLinks().size());
+  EXPECT_EQ(0u, notification->GetLinks().size());
 }
 
 TEST_F(NotificationTest, Links)
 {
   AddNotification("{ id: 'id', links: ['link1', 'link2'] }");
   NotificationPtr notification = PeekNotification();
   ASSERT_TRUE(notification);
   std::vector<std::string> notificationLinks = notification->GetLinks();
-  ASSERT_EQ(2, notificationLinks.size());
+  ASSERT_EQ(2u, notificationLinks.size());
   EXPECT_EQ("link1", notificationLinks[0]);
   EXPECT_EQ("link2", notificationLinks[1]);
 }