SPv2: Use GeometryMapper to implement PaintLayerClipper.

third_party/WebKit/Source/core/layout/compositing/CompositingInputsUpdater.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 "core/layout/compositing/CompositingInputsUpdater.h"
 
 #include "core/dom/Document.h"
 #include "core/frame/FrameView.h"
 #include "core/layout/LayoutBlock.h"
 #include "core/layout/LayoutView.h"
@@ skipping 129 matching lines @@
       info.enclosingCompositedLayer->compositedLayerMapping()
           ->setNeedsGraphicsLayerUpdate(GraphicsLayerUpdateSubtree);
     updateType = ForceUpdate;
   }
 
   if (updateType == ForceUpdate) {
     PaintLayer::AncestorDependentCompositingInputs properties;
     PaintLayer::RareAncestorDependentCompositingInputs rareProperties;
 
     if (!layer->isRootLayer()) {
-      properties.clippedAbsoluteBoundingBox =
-          enclosingIntRect(m_geometryMap.absoluteRect(
-              FloatRect(layer->boundingBoxForCompositingOverlapTest())));
-      // FIXME: Setting the absBounds to 1x1 instead of 0x0 makes very little
-      // sense, but removing this code will make JSGameBench sad.
-      // See https://codereview.chromium.org/13912020/
-      if (properties.clippedAbsoluteBoundingBox.isEmpty())
-        properties.clippedAbsoluteBoundingBox.setSize(IntSize(1, 1));
+      if (!RuntimeEnabledFeatures::slimmingPaintV2Enabled()) {
+        properties.clippedAbsoluteBoundingBox =
+            enclosingIntRect(m_geometryMap.absoluteRect(
+                FloatRect(layer->boundingBoxForCompositingOverlapTest())));
+        // FIXME: Setting the absBounds to 1x1 instead of 0x0 makes very little
+        // sense, but removing this code will make JSGameBench sad.
+        // See https://codereview.chromium.org/13912020/
+        if (properties.clippedAbsoluteBoundingBox.isEmpty())
+          properties.clippedAbsoluteBoundingBox.setSize(IntSize(1, 1));
 
-      IntRect clipRect =
-          pixelSnappedIntRect(layer->clipper()
-                                  .backgroundClipRect(ClipRectsContext(
-                                      m_rootLayer, AbsoluteClipRects))
-                                  .rect());
-      properties.clippedAbsoluteBoundingBox.intersect(clipRect);
+        IntRect clipRect =
+            pixelSnappedIntRect(layer->clipper()
+                                    .backgroundClipRect(ClipRectsContext(
+                                        m_rootLayer, AbsoluteClipRects))
+                                    .rect());
+        properties.clippedAbsoluteBoundingBox.intersect(clipRect);
+      }
 
       const PaintLayer* parent = layer->parent();
       rareProperties.opacityAncestor =
           parent->isTransparent() ? parent : parent->opacityAncestor();
       rareProperties.transformAncestor =
           parent->transform() ? parent : parent->transformAncestor();
       rareProperties.filterAncestor = parent->hasFilterInducingProperty()
                                           ? parent
                                           : parent->filterAncestor();
       bool layerIsFixedPosition =
@@ skipping 99 matching lines @@
   ASSERT(!layer->needsCompositingInputsUpdate());
 
   for (PaintLayer* child = layer->firstChild(); child;
        child = child->nextSibling())
     assertNeedsCompositingInputsUpdateBitsCleared(child);
 }
 
 #endif
 
 }  // namespace blink