Fix paint offset and clips in SPv2

third_party/WebKit/Source/core/paint/PaintLayerTest.cpp

 // 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 "core/paint/PaintLayer.h"
 
 #include "core/html/HTMLIFrameElement.h"
 #include "core/layout/LayoutBoxModelObject.h"
 #include "core/layout/LayoutTestHelper.h"
 #include "core/layout/LayoutView.h"
@@ skipping 17 matching lines @@
 
 SlimmingPaintAndRootLayerScrolling foo[] = {
     SlimmingPaintAndRootLayerScrolling(false, false),
     SlimmingPaintAndRootLayerScrolling(true, false),
     SlimmingPaintAndRootLayerScrolling(false, true),
     SlimmingPaintAndRootLayerScrolling(true, true)};
 
 INSTANTIATE_TEST_CASE_P(All, PaintLayerTest, ::testing::ValuesIn(foo));
 
 TEST_P(PaintLayerTest, CompositedBoundsAbsPosGrandchild) {
-  // TODO(chrishtr): fix this test for SPv2
-  if (RuntimeEnabledFeatures::slimmingPaintV2Enabled())
-    return;
-
   setBodyInnerHTML(
       " <div id='parent'><div id='absposparent'><div id='absposchild'>"
       " </div></div></div>"
       "<style>"
       "  #parent { position: absolute; z-index: 0; overflow: hidden;"
       "  background: lightgray; width: 150px; height: 150px;"
       "  will-change: transform; }"
       "  #absposparent { position: absolute; z-index: 0; }"
       "  #absposchild { position: absolute; top: 0px; left: 0px; height: 200px;"
       "  width: 200px; background: lightblue; }</style>");
@@ skipping 458 matching lines @@
 
   PaintLayer* target =
       toLayoutBoxModelObject(getLayoutObjectByElementId("target"))->layer();
   PaintLayer* containingBlock =
       toLayoutBoxModelObject(getLayoutObjectByElementId("containingBlock"))
           ->layer();
   EXPECT_EQ(containingBlock, target->compositingContainer());
 }
 
 }  // namespace blink