ResourceScheduler get visual signal from RenderViewHostImpl

content/browser/loader/resource_scheduler.h

Index: content/browser/loader/resource_scheduler.h
diff --git a/content/browser/loader/resource_scheduler.h b/content/browser/loader/resource_scheduler.h
index 74ac16d3d42be6fa23f226b134817d030364d3c1..6b3fb180870a3907f771389bf8f296ff39be05a7 100644
--- a/content/browser/loader/resource_scheduler.h
+++ b/content/browser/loader/resource_scheduler.h
@@ -103,7 +103,7 @@ class CONTENT_EXPORT ResourceScheduler : public base::NonThreadSafe {
   // Signals from the UI thread, posted as tasks on the IO thread:
 
   // Called when a renderer is created.
-  void OnClientCreated(int child_id, int route_id);
+  void OnClientCreated(int child_id, int route_id, bool is_visible);
 
   // Called when a renderer is destroyed.
   void OnClientDeleted(int child_id, int route_id);
@@ -136,6 +136,8 @@ class CONTENT_EXPORT ResourceScheduler : public base::NonThreadSafe {
 
   void OnLoadingStateChanged(int child_id, int route_id, bool is_loaded);
 
+  bool IsClientVisibleForTesting(int child_id, int route_id);
+
  private:
   class RequestQueue;
   class ScheduledResourceRequest;