cc: Remove direct calls to LayerImpl::SetHasRenderSurface from tests

cc/trees/layer_tree_host_impl_unittest.cc

Index: cc/trees/layer_tree_host_impl_unittest.cc
diff --git a/cc/trees/layer_tree_host_impl_unittest.cc b/cc/trees/layer_tree_host_impl_unittest.cc
index 200c19e28d4797958a86f948dace20989f8dc23b..0bb9a54f624447c8c6f5ed482fe3b488d0c6ea75 100644
--- a/cc/trees/layer_tree_host_impl_unittest.cc
+++ b/cc/trees/layer_tree_host_impl_unittest.cc
@@ -1395,7 +1395,6 @@ TEST_F(LayerTreeHostImplTest, AnimationSchedulingCommitToActiveTree) {
   auto* root = root_owned.get();
   host_impl_->active_tree()->SetRootLayerForTesting(std::move(root_owned));
   root->SetBounds(gfx::Size(50, 50));
-  root->SetHasRenderSurface(true);
 
   auto child_owned = LayerImpl::Create(host_impl_->active_tree(), 2);
   auto* child = child_owned.get();
@@ -1516,7 +1515,6 @@ TEST_F(LayerTreeHostImplTest, AnimationMarksLayerNotReady) {
       LayerImpl::Create(host_impl_->active_tree(), 1));
   LayerImpl* root = *host_impl_->active_tree()->begin();
   root->SetBounds(gfx::Size(50, 50));
-  root->SetHasRenderSurface(true);
 
   root->test_properties()->AddChild(std::unique_ptr<MissingTilesLayer>(
       new MissingTilesLayer(host_impl_->active_tree(), 2)));