CC: Plumb LayerSettings parameter for cc::Layer construction.

cc/trees/layer_tree_settings.cc

Index: cc/trees/layer_tree_settings.cc
diff --git a/cc/trees/layer_tree_settings.cc b/cc/trees/layer_tree_settings.cc
index d2c3bda2b9c45c1340f5276ff59dd8b85855b1dd..529f63eaf03c8caee04c18276cc84602c87e0192 100644
--- a/cc/trees/layer_tree_settings.cc
+++ b/cc/trees/layer_tree_settings.cc
@@ -13,6 +13,12 @@
 
 namespace cc {
 
+LayerSettings::LayerSettings() : use_compositor_animation_timelines(false) {
+}
+
+LayerSettings::~LayerSettings() {
+}
+
 LayerTreeSettings::LayerTreeSettings()
     : impl_side_painting(false),
       raster_enabled(true),
@@ -69,8 +75,7 @@ LayerTreeSettings::LayerTreeSettings()
       use_display_lists(false),
       use_cached_picture_in_display_list(true),
       verify_property_trees(false),
-      gather_pixel_refs(false),
-      use_compositor_animation_timelines(false) {
+      gather_pixel_refs(false) {
 }
 
 LayerTreeSettings::~LayerTreeSettings() {}