[SPv2] Stop recording paired display items (except for subsequence markers)

third_party/WebKit/Source/core/paint/ClipPathClipper.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/ClipPathClipper.h"
 
 #include "core/dom/ElementTraversal.h"
 #include "core/layout/svg/LayoutSVGResourceClipper.h"
 #include "core/layout/svg/SVGLayoutSupport.h"
 #include "core/layout/svg/SVGResources.h"
@@ skipping 50 matching lines @@
 
 ClipPathClipper::ClipPathClipper(GraphicsContext& context,
                                  ClipPathOperation& clipPathOperation,
                                  const LayoutObject& layoutObject,
                                  const FloatRect& referenceBox,
                                  const FloatPoint& origin)
     : m_resourceClipper(nullptr),
       m_clipperState(ClipperState::NotApplied),
       m_layoutObject(layoutObject),
       m_context(context) {
+  if (RuntimeEnabledFeatures::slimmingPaintV2Enabled())
+    return;
   if (clipPathOperation.type() == ClipPathOperation::SHAPE) {
     ShapeClipPathOperation& shape = toShapeClipPathOperation(clipPathOperation);
     if (!shape.isValid())
       return;
     m_clipPathRecorder.emplace(context, layoutObject, shape.path(referenceBox));
     m_clipperState = ClipperState::AppliedPath;
   } else {
     DCHECK_EQ(clipPathOperation.type(), ClipPathOperation::REFERENCE);
     m_resourceClipper = resolveElementReference(
         layoutObject, toReferenceClipPathOperation(clipPathOperation));
@@ skipping 14 matching lines @@
     }
     if (!prepareEffect(referenceBox, clipPathBounds, originTranslation)) {
       // Indicate there is no cleanup to do.
       m_resourceClipper = nullptr;
       return;
     }
   }
 }
 
 ClipPathClipper::~ClipPathClipper() {
+  if (RuntimeEnabledFeatures::slimmingPaintV2Enabled())
+    return;
   if (m_resourceClipper)
     finishEffect();
 }
 
 bool ClipPathClipper::prepareEffect(const FloatRect& targetBoundingBox,
                                     const FloatRect& visualRect,
                                     const FloatPoint& layerPositionOffset) {
   DCHECK_EQ(m_clipperState, ClipperState::NotApplied);
   SECURITY_DCHECK(!m_resourceClipper->needsLayout());
 
@@ skipping 115 matching lines @@
       // Transfer clip mask -> bg (SrcOver)
       m_maskClipRecorder.reset();
       break;
     case ClipperState::NotApplied:
       NOTREACHED();
       break;
   }
 }
 
 }  // namespace blink