Removed pinch viewport scroll offset distribution

cc/layers/layer.cc

Index: cc/layers/layer.cc
diff --git a/cc/layers/layer.cc b/cc/layers/layer.cc
index d016571e9094b6ea052661a4dbcee33e80a4d6c5..e2469c34a7d4e3b6991fee38eff4a56271d0a34a 100644
--- a/cc/layers/layer.cc
+++ b/cc/layers/layer.cc
@@ -674,7 +674,11 @@ void Layer::RemoveClipChild(Layer* child) {
 void Layer::SetScrollOffset(gfx::Vector2d scroll_offset) {
   DCHECK(IsPropertyChangeAllowed());
 
-  if (layer_tree_host()) {
+  // TODO(bokan): Virtual viewport pinch doesn't need manual updates of main
+  // frame and pinch viewport layers. Remove once old-style pinch is no longer
+  // supported.
+  if (layer_tree_host() &&
+      !layer_tree_host()->settings().use_pinch_virtual_viewport) {
     scroll_offset = layer_tree_host()->DistributeScrollOffsetToViewports(

[aelias_OOO_until_Jul13, 2014/03/25 00:09:23]

It looks like this method just does "return offset" when called on the old pinch
flow, so can we just delete the whole thing now instead?

         scroll_offset, this);
   }