Revert of Moving background animation ticking from LayerTreeHostImpl into the Scheduler.

cc/scheduler/scheduler.cc

Index: cc/scheduler/scheduler.cc
diff --git a/cc/scheduler/scheduler.cc b/cc/scheduler/scheduler.cc
index 4c2316fc048ac5d8bee6004f850621d398b7eed3..88c27c103e33fe2d85302772a302663515a5715c 100644
--- a/cc/scheduler/scheduler.cc
+++ b/cc/scheduler/scheduler.cc
@@ -62,9 +62,9 @@
                "SyntheticBeginFrameSource");
   DCHECK(!(scheduler->background_frame_source_internal_));
   scheduler->background_frame_source_internal_ =
-      SyntheticBeginFrameSource::Create(
-          scheduler->task_runner_.get(), scheduler->Now(),
-          scheduler->settings_.background_frame_interval);
+      SyntheticBeginFrameSource::Create(scheduler->task_runner_.get(),
+                                        scheduler->Now(),
+                                        base::TimeDelta::FromSeconds(1));
   return scheduler->background_frame_source_internal_.get();
 }