Page Abort Events for relevant navigations

components/page_load_metrics/browser/metrics_web_contents_observer.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_PAGE_LOAD_METRICS_BROWSER_PAGE_LOAD_METRICS_WEB_CONTENTS_OBSERVER_H_
 #define COMPONENTS_PAGE_LOAD_METRICS_BROWSER_PAGE_LOAD_METRICS_WEB_CONTENTS_OBSERVER_H_
 
 #include "base/containers/scoped_ptr_map.h"
 #include "base/macros.h"
 #include "base/time/time.h"
@@ skipping 34 matching lines @@
   // these counts. This includes all failed provisional loads.
   PAGE_LOAD_ABORTED_BEFORE_FIRST_LAYOUT,
 
   // We increase this count if a page load successfully has a layout.
   // Differentiate between loads that were backgrounded before first layout.
   // Note that a load that is backgrounded, then foregrounded before first
   // layout will still end up in the backgrounded bucket.
   PAGE_LOAD_SUCCESSFUL_FIRST_LAYOUT_FOREGROUND,
   PAGE_LOAD_SUCCESSFUL_FIRST_LAYOUT_BACKGROUND,
 
+  PAGE_LOAD_ABORTED_BEFORE_FIRST_LAYOUT_RELEVANT,

[Bryan McQuade, 2015/10/05 17:46:00]

can you add a comment for this one? what does relevant indicate here?

+
   // Add values before this final count.
   PAGE_LOAD_LAST_ENTRY
 };
 
 class PageLoadTracker {
  public:
   explicit PageLoadTracker(bool in_foreground);
   ~PageLoadTracker();
   void Commit();
   void WebContentsHidden();
@@ skipping 58 matching lines @@
   base::ScopedPtrMap<content::NavigationHandle*, scoped_ptr<PageLoadTracker>>
       provisional_loads_;
   scoped_ptr<PageLoadTracker> committed_load_;
 
   DISALLOW_COPY_AND_ASSIGN(MetricsWebContentsObserver);
 };
 
 }  // namespace page_load_metrics
 
 #endif  // COMPONENTS_PAGE_LOAD_METRICS_BROWSER_PAGE_LOAD_METRICS_WEB_CONTENTS_OBSERVER_H_