Add page-level aggregation of SubresourceFilter time metrics.

components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h

Index: components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h
diff --git a/components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h b/components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h
index ad4863bebc547f3f314e37b9202e7eb86693d937..277b37598d7834e47e130502a6349ff15dc845f7 100644
--- a/components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h
+++ b/components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h
@@ -13,6 +13,7 @@
 
 #include "base/macros.h"
 #include "base/supports_user_data.h"
+#include "base/time/time.h"
 #include "components/safe_browsing_db/util.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "url/gurl.h"
@@ -91,6 +92,10 @@ class ContentSubresourceFilterDriverFactory
 
   void OnFirstSubresourceLoadDisallowed();
 
+  void OnEvaluationDurationAggregated(
+      base::TimeDelta evaluation_total_wall_duration,
+      base::TimeDelta evaluation_total_cpu_duration);
+
   bool IsWhitelisted(const GURL& url) const;
 
   // content::WebContentsObserver:
@@ -102,6 +107,8 @@ class ContentSubresourceFilterDriverFactory
   void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override;
   void ReadyToCommitNavigation(
       content::NavigationHandle* navigation_handle) override;
+  void DidFinishLoad(content::RenderFrameHost* render_frame_host,
+                     const GURL& validated_url) override;
   bool OnMessageReceived(const IPC::Message& message,
                          content::RenderFrameHost* render_frame_host) override;
 
@@ -135,6 +142,12 @@ class ContentSubresourceFilterDriverFactory
 
   URLToActivationListsMap activation_list_matches_;
 
+  // Total time spent in DocumentSubresourceFilter::allowLoad() calls,
+  // aggregated across all frames, evaluating subresource loads for the current
+  // page load.
+  base::TimeDelta evaluation_total_wall_duration_;
+  base::TimeDelta evaluation_total_cpu_duration_;
+
   DISALLOW_COPY_AND_ASSIGN(ContentSubresourceFilterDriverFactory);
 };