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 33bf9e3584799fccea079da36f2b6915201c6bd4..01ae9a773cbd69a82196a802f1cf1139b22556e4 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),
@@ -71,8 +77,7 @@ 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() {}