Delete scrollCompensationAdjustment.

cc/trees/property_tree_builder.cc

Index: cc/trees/property_tree_builder.cc
diff --git a/cc/trees/property_tree_builder.cc b/cc/trees/property_tree_builder.cc
index b717239d20181c4af65b1e2cc6193a1d0a65cdbf..d52f13951a4551e2d65ed6a2e4a284fdd312ee5f 100644
--- a/cc/trees/property_tree_builder.cc
+++ b/cc/trees/property_tree_builder.cc
@@ -54,7 +54,7 @@ struct DataForRecursion {
   uint32_t main_thread_scrolling_reasons;
   bool scroll_tree_parent_created_by_uninheritable_criteria;
   const gfx::Transform* device_transform;
-  gfx::Vector2dF scroll_compensation_adjustment;
+  gfx::Vector2dF scroll_snap;
   gfx::Transform compound_transform_since_render_target;
   bool axis_align_since_render_target;
   int sequence_number;
@@ -287,7 +287,7 @@ bool AddTransformNodeIfNeeded(
                           ->offset_to_transform_parent();
       source_index =
           data_from_ancestor.transform_tree_parent->transform_tree_index();
-      source_offset += data_from_ancestor.scroll_compensation_adjustment;
+      source_offset -= data_from_ancestor.scroll_snap;
     }
   }
 
@@ -307,7 +307,7 @@ bool AddTransformNodeIfNeeded(
   data_for_children->transform_tree_parent = layer;
 
   if (layer->IsContainerForFixedPositionLayers() || is_fixed)
-    data_for_children->scroll_compensation_adjustment = gfx::Vector2dF();
+    data_for_children->scroll_snap = gfx::Vector2dF();
 
   if (!requires_node) {
     data_for_children->should_flatten |= layer->should_flatten_transform();
@@ -447,8 +447,7 @@ bool AddTransformNodeIfNeeded(
   // Flattening (if needed) will be handled by |node|.
   layer->set_should_flatten_transform_from_property_tree(false);
 
-  data_for_children->scroll_compensation_adjustment +=
-      layer->ScrollCompensationAdjustment() - node->data.scroll_snap;
+  data_for_children->scroll_snap += node->data.scroll_snap;
 
   node->owner_id = layer->id();