[SPv2] Respect transform-style in the Blink and cc property trees.

third_party/WebKit/Source/platform/graphics/compositing/PaintArtifactCompositor.cpp

 // Copyright 2015 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 "platform/graphics/compositing/PaintArtifactCompositor.h"
 
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/picture_layer.h"
 #include "cc/playback/display_item_list.h"
@@ skipping 397 matching lines @@
     transformTree().SetContentTargetId(id, kRealRootNodeId);
     compositorNode.source_node_id = parentId;
 
     FloatPoint3D origin = transformNode->origin();
     compositorNode.pre_local.matrix().setTranslate(
         -origin.x(), -origin.y(), -origin.z());
     compositorNode.local.matrix() = TransformationMatrix::toSkMatrix44(transformNode->matrix());
     compositorNode.post_local.matrix().setTranslate(
         origin.x(), origin.y(), origin.z());
     compositorNode.needs_local_transform_update = true;
+    compositorNode.flattens_inherited_transform = transformNode->flattensInheritedTransform();
+    compositorNode.sorting_context_id = transformNode->renderingContextID();
 
     m_rootLayer->AddChild(dummyLayer);
     dummyLayer->SetTransformTreeIndex(id);
     dummyLayer->SetClipTreeIndex(kSecondaryRootNodeId);
     dummyLayer->SetEffectTreeIndex(kSecondaryRootNodeId);
     dummyLayer->SetScrollTreeIndex(kRealRootNodeId);
     dummyLayer->set_property_tree_sequence_number(kPropertyTreeSequenceNumber);
 
     auto result = m_transformNodeMap.set(transformNode, id);
     DCHECK(result.isNewEntry);
@@ skipping 150 matching lines @@
 
         layer->set_offset_to_transform_parent(layerOffset);
 
         m_rootLayer->AddChild(layer);
         layer->set_property_tree_sequence_number(kPropertyTreeSequenceNumber);
         layer->SetTransformTreeIndex(transformId);
         layer->SetClipTreeIndex(clipId);
         layer->SetEffectTreeIndex(effectId);
         layer->SetScrollTreeIndex(kRealRootNodeId);
 
+        // TODO(jbroman): This probably shouldn't be necessary, but it is still
+        // queried by RenderSurfaceImpl.
+        layer->Set3dSortingContextId(host->property_trees()->transform_tree.Node(transformId)->sorting_context_id);
+
         if (m_extraDataForTestingEnabled)
             m_extraDataForTesting->contentLayers.append(layer);
     }
 
     // Mark the property trees as having been rebuilt.
     host->property_trees()->sequence_number = kPropertyTreeSequenceNumber;
     host->property_trees()->needs_rebuild = false;
 }
 
 } // namespace blink