cc: Add verify transform tree calculations to LayerTreeSettings

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 36c0a57a8cd5d8e8010c3040e918eafe2ecd233c..4b13497b04b5862df05254cffdbb99feaf4c4056 100644
--- a/cc/trees/layer_tree_host_impl_unittest.cc
+++ b/cc/trees/layer_tree_host_impl_unittest.cc
@@ -112,6 +112,7 @@ class LayerTreeHostImplTest : public testing::Test,
     settings.renderer_settings.texture_id_allocation_chunk_size = 1;
     settings.gpu_rasterization_enabled = true;
     settings.verify_clip_tree_calculations = true;
+    settings.verify_transform_tree_calculations = true;
     return settings;
   }