ResourceScheduler get visual signal from RenderViewHostImpl

content/browser/loader/resource_dispatcher_host_impl.cc

Index: content/browser/loader/resource_dispatcher_host_impl.cc
diff --git a/content/browser/loader/resource_dispatcher_host_impl.cc b/content/browser/loader/resource_dispatcher_host_impl.cc
index fdddc37d1a59700218d8a6dbd0e893a81267532c..0f1890a1ee0381c29abddb25374dbca0bd24f8bd 100644
--- a/content/browser/loader/resource_dispatcher_host_impl.cc
+++ b/content/browser/loader/resource_dispatcher_host_impl.cc
@@ -1324,8 +1324,9 @@ ResourceRequestInfoImpl* ResourceDispatcherHostImpl::CreateRequestInfo(
 
 void ResourceDispatcherHostImpl::OnRenderViewHostCreated(
     int child_id,
-    int route_id) {
-  scheduler_->OnClientCreated(child_id, route_id);
+    int route_id,
+    bool is_visible) {
+  scheduler_->OnClientCreated(child_id, route_id, is_visible);
 }
 
 void ResourceDispatcherHostImpl::OnRenderViewHostDeleted(
@@ -1335,6 +1336,18 @@ void ResourceDispatcherHostImpl::OnRenderViewHostDeleted(
   CancelRequestsForRoute(child_id, route_id);
 }
 
+void ResourceDispatcherHostImpl::OnRenderViewHostWasHidden(
+    int child_id,
+    int route_id) {
+  scheduler_->OnVisibilityChanged(child_id, route_id, false);
+}
+
+void ResourceDispatcherHostImpl::OnRenderViewHostWasShown(
+    int child_id,
+    int route_id) {
+  scheduler_->OnVisibilityChanged(child_id, route_id, true);
+}
+
 // This function is only used for saving feature.
 void ResourceDispatcherHostImpl::BeginSaveFile(
     const GURL& url,