Move MaxScrollOffset to property_trees

cc/layers/layer.cc

Index: cc/layers/layer.cc
diff --git a/cc/layers/layer.cc b/cc/layers/layer.cc
index 2430f9ca74906d6c7b9eb46a3441a561bfb318b1..342708e4ac9e05d32f9b2dfee1b34ba8409c3c64 100644
--- a/cc/layers/layer.cc
+++ b/cc/layers/layer.cc
@@ -365,15 +365,7 @@ void Layer::SetBounds(const gfx::Size& size) {
   if (!layer_tree_host_)
     return;
 
-  if (ClipNode* clip_node = layer_tree_host_->property_trees()->clip_tree.Node(
-          clip_tree_index())) {
-    if (clip_node->owner_id == id()) {
-      clip_node->data.clip.set_size(gfx::SizeF(size));
-      layer_tree_host_->property_trees()->clip_tree.set_needs_update(true);
-    }
-  }
-
-  SetNeedsCommitNoRebuild();
+  SetNeedsCommit();
 }
 
 Layer* Layer::RootLayer() {
@@ -942,6 +934,10 @@ void Layer::SetScrollClipLayerId(int clip_layer_id) {
   SetNeedsCommit();
 }
 
+Layer* Layer::scroll_clip_layer() const {
+  return layer_tree_host()->LayerById(scroll_clip_layer_id_);
+}
+
 void Layer::SetUserScrollable(bool horizontal, bool vertical) {
   DCHECK(IsPropertyChangeAllowed());
   if (user_scrollable_horizontal_ == horizontal &&