Remove scroll corners and resizers.

sky/engine/platform/graphics/CompositingReasons.cpp

 // 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 "platform/graphics/CompositingReasons.h"
 
 #include "wtf/StdLibExtras.h"
 
 namespace blink {
@@ skipping 109 matching lines @@
         "Secondary layer, to house the perspective transform for all descendants" },
     { CompositingReasonLayerForHorizontalScrollbar,
         "layerForHorizontalScrollbar",
         "Secondary layer, the horizontal scrollbar layer" },
     { CompositingReasonLayerForVerticalScrollbar,
         "layerForVerticalScrollbar",
         "Secondary layer, the vertical scrollbar layer" },
     { CompositingReasonLayerForOverflowControlsHost,
         "layerForOverflowControlsHost",
         "Secondary layer, the overflow controls host layer" },
-    { CompositingReasonLayerForScrollCorner,
-        "layerForScrollCorner",
-        "Secondary layer, the scroll corner layer" },
     { CompositingReasonLayerForScrollingContents,
         "layerForScrollingContents",
         "Secondary layer, to house contents that can be scrolled" },
     { CompositingReasonLayerForScrollingContainer,
         "layerForScrollingContainer",
         "Secondary layer, used to position the scolling contents while scrolling" },
     { CompositingReasonLayerForSquashingContents,
         "layerForSquashingContents",
         "Secondary layer, home for a group of squashable content" },
     { CompositingReasonLayerForSquashingContainer,
@@ skipping 15 matching lines @@
         "layerForScrollingBlockSelection",
         "Secondary layer, to house block selection gaps for composited scrolling with no scrolling contents" },
     { CompositingReasonInlineTransform,
         "inlineTransform",
         "Has an inline transform, which causes subsequent layers to assume overlap" },
 };
 
 size_t kNumberOfCompositingReasons = WTF_ARRAY_LENGTH(kCompositingReasonStringMap);
 
 } // namespace blink