[scheduler] Throttle background frames with 1% CPU limit

third_party/WebKit/Source/platform/scheduler/renderer/web_view_scheduler_impl.h

Index: third_party/WebKit/Source/platform/scheduler/renderer/web_view_scheduler_impl.h
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/web_view_scheduler_impl.h b/third_party/WebKit/Source/platform/scheduler/renderer/web_view_scheduler_impl.h
index a4b7c679dc8ae299d214eb4aa7f35b86fd22484c..1b1e57c88cd17528ead4a3e32824a76640e9af71 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/web_view_scheduler_impl.h
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/web_view_scheduler_impl.h
@@ -59,6 +59,8 @@ class BLINK_PLATFORM_EXPORT WebViewSchedulerImpl : public WebViewScheduler {
   void Unregister(WebFrameSchedulerImpl* frame_scheduler);
 
  private:
+  friend class WebFrameSchedulerImpl;

[Sami, 2016/09/27 17:11:56]

Instead of this could we just adjust the public API so that the frame scheduler
can do its thing?

[alex clarke (OOO till 29th), 2016/09/27 17:16:23]

+1

[altimin, 2016/09/27 17:38:23]

Done.

+
   void setAllowVirtualTimeToAdvance(bool allow_virtual_time_to_advance);
   void ApplyVirtualTimePolicy();
 
@@ -73,6 +75,7 @@ class BLINK_PLATFORM_EXPORT WebViewSchedulerImpl : public WebViewScheduler {
   bool allow_virtual_time_to_advance_;
   bool have_seen_loading_task_;
   bool virtual_time_;
+  TaskQueueThrottler::TimeBudgetPool* background_time_budget_pool_;

[Sami, 2016/09/27 17:11:56]

Not owned?

[altimin, 2016/09/27 17:38:23]

Done.

 
   DISALLOW_COPY_AND_ASSIGN(WebViewSchedulerImpl);
 };