scheduler: Throttle timers in out-of-view frames

components/scheduler/renderer/renderer_scheduler.h

Index: components/scheduler/renderer/renderer_scheduler.h
diff --git a/components/scheduler/renderer/renderer_scheduler.h b/components/scheduler/renderer/renderer_scheduler.h
index c6116ea79bdaa61abb4c5e48d3d6257ec6c66103..0b8c2ee9e0036ffc2ffd25bffc99db521325c617 100644
--- a/components/scheduler/renderer/renderer_scheduler.h
+++ b/components/scheduler/renderer/renderer_scheduler.h
@@ -92,6 +92,9 @@ class SCHEDULER_EXPORT RendererScheduler : public ChildScheduler {
   // Returns a new timer task runner. This queue is intended for DOM Timers.
   virtual scoped_refptr<TaskQueue> NewTimerTaskRunner(const char* name) = 0;
 
+  // Returns a task runner for tasks which don't fit into the above categories.
+  virtual scoped_refptr<TaskQueue> NewDefaultTaskRunner(const char* name) = 0;
+
   // Returns a new RenderWidgetSchedulingState.  The signals from this will be
   // used to make scheduling decisions.
   virtual std::unique_ptr<RenderWidgetSchedulingState>