cc: Compute draw transforms dynamically.

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 504 matching lines @@
   int id = clipTree().Insert(cc::ClipNode(), parentId);
 
   cc::ClipNode& compositorNode = *clipTree().Node(id);
   compositorNode.owner_id = dummyLayer->id();
 
   // TODO(jbroman): Don't discard rounded corners.
   compositorNode.clip = clipNode->clipRect().rect();
   compositorNode.transform_id =
       compositorIdForTransformNode(clipNode->localTransformSpace());
   compositorNode.target_transform_id = kRealRootNodeId;
+  compositorNode.target_effect_id = kSecondaryRootNodeId;
   compositorNode.applies_local_clip = true;
   compositorNode.layers_are_clipped = true;
   compositorNode.layers_are_clipped_when_surfaces_disabled = true;
 
   m_rootLayer->AddChild(dummyLayer);
   dummyLayer->SetTransformTreeIndex(compositorNode.transform_id);
   dummyLayer->SetClipTreeIndex(id);
   dummyLayer->SetEffectTreeIndex(kSecondaryRootNodeId);
   dummyLayer->SetScrollTreeIndex(kRealRootNodeId);
   dummyLayer->set_property_tree_sequence_number(kPropertyTreeSequenceNumber);
@@ skipping 132 matching lines @@
   scoped_refptr<cc::Layer> dummyLayer = cc::Layer::Create();
   m_rootLayer->AddChild(dummyLayer);
 
   // Also cc assumes a clip node is always created by a layer that creates
   // render surface.
   cc::ClipNode& dummyClip =
       *clipTree().Node(clipTree().Insert(cc::ClipNode(), kSecondaryRootNodeId));
   dummyClip.owner_id = dummyLayer->id();
   dummyClip.transform_id = kRealRootNodeId;
   dummyClip.target_transform_id = kRealRootNodeId;
+  dummyClip.target_effect_id = kSecondaryRootNodeId;
 
   cc::EffectNode& effectNode = *effectTree().Node(effectTree().Insert(
       cc::EffectNode(), compositorIdForCurrentEffectNode()));
   effectNode.owner_id = dummyLayer->id();
   effectNode.clip_id = dummyClip.id;
   effectNode.opacity = nextEffect->opacity();
   m_effectStack.append(BlinkEffectAndCcIdPair{nextEffect, effectNode.id});
 
   dummyLayer->set_property_tree_sequence_number(kPropertyTreeSequenceNumber);
   dummyLayer->SetTransformTreeIndex(kSecondaryRootNodeId);
@@ skipping 72 matching lines @@
 
     if (m_extraDataForTestingEnabled)
       m_extraDataForTesting->contentLayers.append(layer);
   }
   m_contentLayerClients.clear();
   m_contentLayerClients.swap(newContentLayerClients);
 
   // Mark the property trees as having been rebuilt.
   layerTree->property_trees()->sequence_number = kPropertyTreeSequenceNumber;
   layerTree->property_trees()->needs_rebuild = false;
+  layerTree->property_trees()->ResetCachedData();
 }
 
 }  // namespace blink