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

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index f4407f0d9600f7bc486f5e12e7e95b8f58e497cc..bc9e6e988bcf7123748f3184840875192bc8fa44 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -33,6 +33,7 @@
 #include "cc/blink/web_external_bitmap_impl.h"
 #include "cc/blink/web_layer_impl.h"
 #include "cc/raster/task_graph_runner.h"
+#include "cc/trees/layer_tree_settings.h"
 #include "components/scheduler/renderer/renderer_scheduler.h"
 #include "content/child/appcache/appcache_dispatcher.h"
 #include "content/child/appcache/appcache_frontend_impl.h"
@@ -576,6 +577,11 @@ void RenderThreadImpl::Init() {
   cc_blink::WebLayerImpl::SetImplSidePaintingEnabled(
       is_impl_side_painting_enabled_);
 
+  cc::LayerSettings layer_settings;
+  if (command_line.HasSwitch(switches::kEnableCompositorAnimationTimelines))
+    layer_settings.use_compositor_animation_timelines = true;
+  cc_blink::WebLayerImpl::SetLayerSettings(layer_settings);
+
   is_zero_copy_enabled_ = command_line.HasSwitch(switches::kEnableZeroCopy);
   is_one_copy_enabled_ = !command_line.HasSwitch(switches::kDisableOneCopy);