Standardize which page loads are tracked

components/page_load_metrics/common/page_load_timing.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_COMMON_PAGE_LOAD_TIMING_H_
 #define COMPONENTS_PAGE_LOAD_METRICS_COMMON_PAGE_LOAD_TIMING_H_
 
 #include "base/optional.h"
 #include "base/time/time.h"
 #include "third_party/WebKit/public/platform/WebLoadingBehaviorFlag.h"
 
 namespace page_load_metrics {
 
 // PageLoadTiming contains timing metrics associated with a page load. Many of
 // the metrics here are based on the Navigation Timing spec:
 // http://www.w3.org/TR/navigation-timing/.
 struct PageLoadTiming {
  public:
   PageLoadTiming();
   PageLoadTiming(const PageLoadTiming& other);
   ~PageLoadTiming();
 
   bool operator==(const PageLoadTiming& other) const;
+  bool operator!=(const PageLoadTiming& other) const {
+    return !(*this == other);
+  }
 
   bool IsEmpty() const;
 
   // Time that the navigation for the associated page was initiated.
   base::Time navigation_start;
 
   // All TimeDeltas are relative to navigation_start
 
   // Time that the first byte of the response is received.
   base::Optional<base::TimeDelta> response_start;
@@ skipping 49 matching lines @@
 struct PageLoadMetadata {
   PageLoadMetadata();
   bool operator==(const PageLoadMetadata& other) const;
   // These are packed blink::WebLoadingBehaviorFlag enums.
   int behavior_flags = blink::WebLoadingBehaviorNone;
 };
 
 }  // namespace page_load_metrics
 
 #endif  // COMPONENTS_PAGE_LOAD_METRICS_COMMON_PAGE_LOAD_TIMING_H_