scheduler: Throttle timers in out-of-view frames

components/scheduler/renderer/web_view_scheduler_impl.h

Index: components/scheduler/renderer/web_view_scheduler_impl.h
diff --git a/components/scheduler/renderer/web_view_scheduler_impl.h b/components/scheduler/renderer/web_view_scheduler_impl.h
index f061517bad15bb455871d94e341f093f8b75a4d1..1ca1ef5eb37489f1fbb7103b40cb548412b8ae08 100644
--- a/components/scheduler/renderer/web_view_scheduler_impl.h
+++ b/components/scheduler/renderer/web_view_scheduler_impl.h
@@ -35,7 +35,8 @@ class SCHEDULER_EXPORT WebViewSchedulerImpl : public blink::WebViewScheduler {
  public:
   WebViewSchedulerImpl(blink::WebView* web_view,
                        RendererSchedulerImpl* renderer_scheduler,
-                       bool disable_background_timer_throttling);
+                       bool disable_background_timer_throttling,
+                       bool allow_hidden_timer_throttling);
 
   ~WebViewSchedulerImpl() override;
 
@@ -70,6 +71,7 @@ class SCHEDULER_EXPORT WebViewSchedulerImpl : public blink::WebViewScheduler {
   bool page_visible_;
   bool disable_background_timer_throttling_;
   bool allow_virtual_time_to_advance_;
+  bool allow_hidden_timer_throttling_;
 
   DISALLOW_COPY_AND_ASSIGN(WebViewSchedulerImpl);
 };