CC Animation: Erase cc::LayerSettings everywhere.

cc/test/layer_tree_host_common_test.cc

Index: cc/test/layer_tree_host_common_test.cc
diff --git a/cc/test/layer_tree_host_common_test.cc b/cc/test/layer_tree_host_common_test.cc
index cbad7e897b476914a4d2e6603865812aa52c78b2..d1a7dc25b643183735a62b201ebc499b174bd117 100644
--- a/cc/test/layer_tree_host_common_test.cc
+++ b/cc/test/layer_tree_host_common_test.cc
@@ -17,8 +17,6 @@ LayerTreeHostCommonTestBase::LayerTreeHostCommonTestBase(
     const LayerTreeSettings& settings)
     : LayerTestCommon::LayerImplTest(settings),
       render_surface_layer_list_count_(0) {
-  layer_settings_.use_compositor_animation_timelines =
-      settings.use_compositor_animation_timelines;
 }
 
 LayerTreeHostCommonTestBase::~LayerTreeHostCommonTestBase() {
@@ -228,15 +226,8 @@ bool LayerTreeHostCommonTestBase::UpdateLayerListContains(int id) const {
   return false;
 }
 
-class LayerTreeSettingsForCommonTest : public LayerTreeSettings {
- public:
-  LayerTreeSettingsForCommonTest() {
-    use_compositor_animation_timelines = true;
-  }
-};
-
 LayerTreeHostCommonTest::LayerTreeHostCommonTest()
-    : LayerTreeHostCommonTestBase(LayerTreeSettingsForCommonTest()) {}
+    : LayerTreeHostCommonTestBase(LayerTreeSettings()) {}
 
 LayerTreeHostCommonTest::LayerTreeHostCommonTest(
     const LayerTreeSettings& settings)