CC Animation: Erase cc::LayerSettings everywhere.

content/test/web_layer_tree_view_impl_for_testing.cc

Index: content/test/web_layer_tree_view_impl_for_testing.cc
diff --git a/content/test/web_layer_tree_view_impl_for_testing.cc b/content/test/web_layer_tree_view_impl_for_testing.cc
index 53e6d44aa408b19191b9e2361e4b3f01bc566211..8a42c14e1e58fd2cf98b7143cc6dc1a3fbf5f947 100644
--- a/content/test/web_layer_tree_view_impl_for_testing.cc
+++ b/content/test/web_layer_tree_view_impl_for_testing.cc
@@ -42,8 +42,6 @@ void WebLayerTreeViewImplForTesting::Initialize() {
 
   // Accelerated animations are enabled for unit tests.
   settings.accelerated_animation_enabled = true;
-  // External cc::AnimationHost is enabled for unit tests.
-  settings.use_compositor_animation_timelines = true;
 
   cc::LayerTreeHost::InitParams params;
   params.client = this;