Add a way to send the resource percentage signal to the RC.

chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer.h

Index: chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer.h
diff --git a/chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer.h b/chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer.h
index 58e8d87861dccc8e9159af34fcad3797443fa0d7..a2dad35ba2eebc2ba24f768ab0476c6d308917db 100644
--- a/chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer.h
+++ b/chrome/browser/page_load_metrics/observers/resource_tracking_page_load_metrics_observer.h
@@ -8,6 +8,12 @@
 #include <stdint.h>
 
 #include "chrome/browser/page_load_metrics/page_load_metrics_observer.h"
+#include "components/offline_pages/core/background/offliner.h"
+#include "content/public/common/resource_type.h"
+
+namespace offline_pages {
+class ResourceTrackerObserver;
+}
 
 namespace page_load_metrics {
 
@@ -29,19 +35,21 @@ class ResourceTrackingPageLoadMetricsObserver
   void OnLoadedResource(
       const ExtraRequestCompleteInfo& extra_request_complete_info) override;
 
-  // For the specified type, get the count of requests started and completed.
-  // TODO(petewil) Note that type is not used yet, code to use it is coming
-  // soon.
-  void GetCountsForTypeForTesting(const content::ResourceType type,
-                                  int64_t* started_count,
-                                  int64_t* completed_count);
+  // Called when the page load commits, we return STOP_OBSERVING if the page is
+  // not part of an offlining attempt.
+  ObservePolicy OnCommit(content::NavigationHandle* navigation_handle) override;
 
  private:
+  void InformClient(const content::ResourceType type);
+
   // TODO(petewil): Some way to keep track of what we've seen
   // TODO(petewil): Some way to inform our keeper of aggregate results when they
   // change.
   int64_t started_count_;
   int64_t completed_count_;
+  // Unowned pointer to the ResourceTrackerObserver for this profile, it must be
+  // kept valid by the caller for the lifetime of the PageLoadMetricsObserver.

[Dmitry Titov, 2017/05/24 23:09:35]

It is hard to say if "must be kept valid" requirement is already enforced
somehow or not. Would a weak ref work here? Our offliners have
WeakRefFactories...

+  offline_pages::Offliner* offliner_;
 };
 
 }  // namespace page_load_metrics