Add page-level aggregation of SubresourceFilter time metrics.

components/subresource_filter/content/renderer/subresource_filter_agent.cc

Index: components/subresource_filter/content/renderer/subresource_filter_agent.cc
diff --git a/components/subresource_filter/content/renderer/subresource_filter_agent.cc b/components/subresource_filter/content/renderer/subresource_filter_agent.cc
index 05405c00b9a3b88998bed812659f29d7dc615c96..196acc34f7fe6e8cbee15a3cfdf7f2efd6df6246 100644
--- a/components/subresource_filter/content/renderer/subresource_filter_agent.cc
+++ b/components/subresource_filter/content/renderer/subresource_filter_agent.cc
@@ -60,6 +60,14 @@ void SubresourceFilterAgent::
       render_frame()->GetRoutingID()));
 }
 
+void SubresourceFilterAgent::SendDocumentLoadStatistics(
+    base::TimeDelta evaluation_total_wall_duration,
+    base::TimeDelta evaluation_total_cpu_duration) {
+  render_frame()->Send(new SubresourceFilterHostMsg_DocumentLoadStatistics(
+      render_frame()->GetRoutingID(), evaluation_total_wall_duration,
+      evaluation_total_cpu_duration));
+}
+
 void SubresourceFilterAgent::OnActivateForProvisionalLoad(
     ActivationState activation_state,
     const GURL& url,
@@ -113,6 +121,9 @@ void SubresourceFilterAgent::RecordHistogramsOnLoadFinished() {
         statistics.evaluation_total_cpu_duration,
         base::TimeDelta::FromMicroseconds(1), base::TimeDelta::FromSeconds(10),
         50);
+
+    SendDocumentLoadStatistics(statistics.evaluation_total_wall_duration,
+                               statistics.evaluation_total_cpu_duration);
   }
 }