cc: Make LayerTreeHost a protected Layer member.

cc/trees/layer_tree_host.cc

Index: cc/trees/layer_tree_host.cc
diff --git a/cc/trees/layer_tree_host.cc b/cc/trees/layer_tree_host.cc
index d9195db13babf66b21893936579d489985569fe2..5f6ea37cfb5a7b82fe30ec64e1908d22927d559c 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -757,20 +757,6 @@ void LayerTreeHost::RecordGpuRasterizationHistogram() {
   gpu_rasterization_histogram_recorded_ = true;
 }
 
-void LayerTreeHost::BuildPropertyTreesForTesting() {
-  PropertyTreeBuilder::PreCalculateMetaInformation(layer_tree_->root_layer());
-  gfx::Transform identity_transform;
-  PropertyTreeBuilder::BuildPropertyTrees(
-      layer_tree_->root_layer(), layer_tree_->page_scale_layer(),
-      layer_tree_->inner_viewport_scroll_layer(),
-      layer_tree_->outer_viewport_scroll_layer(),
-      layer_tree_->overscroll_elasticity_layer(),
-      layer_tree_->elastic_overscroll(), layer_tree_->page_scale_factor(),
-      layer_tree_->device_scale_factor(),
-      gfx::Rect(layer_tree_->device_viewport_size()), identity_transform,
-      layer_tree_->property_trees());
-}
-
 bool LayerTreeHost::DoUpdateLayers(Layer* root_layer) {
   TRACE_EVENT1("cc", "LayerTreeHost::DoUpdateLayers", "source_frame_number",
                SourceFrameNumber());