Change Rect and Quad to be CSSValues

Source/core/css/Rect.cpp

Index: Source/core/css/Rect.cpp
diff --git a/Source/core/css/Rect.cpp b/Source/core/css/Rect.cpp
deleted file mode 100644
index ac9e128e4a76c74fdaff35835a917364f520c16c..0000000000000000000000000000000000000000
--- a/Source/core/css/Rect.cpp
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright 2014 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 "config.h"
-#include "core/css/Rect.h"
-
-namespace blink {
-
-DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(RectBase)
-
-DEFINE_TRACE(RectBase)
-{
-    visitor->trace(m_top);
-    visitor->trace(m_right);
-    visitor->trace(m_bottom);
-    visitor->trace(m_left);
-}
-
-}