Update from https://crrev.com/306724

cc/trees/layer_tree_impl.cc

Index: cc/trees/layer_tree_impl.cc
diff --git a/cc/trees/layer_tree_impl.cc b/cc/trees/layer_tree_impl.cc
index ad355fa977b0cc0168c28f8c21defcba7784263c..a278fbfc988e51fc8cf63086720e4b010d545642 100644
--- a/cc/trees/layer_tree_impl.cc
+++ b/cc/trees/layer_tree_impl.cc
@@ -823,6 +823,10 @@ bool LayerTreeImpl::use_gpu_rasterization() const {
   return layer_tree_host_impl_->use_gpu_rasterization();
 }
 
+GpuRasterizationStatus LayerTreeImpl::GetGpuRasterizationStatus() const {
+  return layer_tree_host_impl_->gpu_rasterization_status();
+}
+
 bool LayerTreeImpl::create_low_res_tiling() const {
   return layer_tree_host_impl_->create_low_res_tiling();
 }