Domain Reliability: Add more upload-related histograms.

components/domain_reliability/context_manager.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_DOMAIN_RELIABILITY_CONTEXT_MANAGER_H_
 #define COMPONENTS_DOMAIN_RELIABILITY_CONTEXT_MANAGER_H_
 
 #include <stddef.h>
 
 #include <map>
 #include <memory>
 #include <string>
 #include <unordered_set>
 
 #include "base/macros.h"
+#include "base/time/time.h"
 #include "base/values.h"
 #include "components/domain_reliability/beacon.h"
 #include "components/domain_reliability/config.h"
 #include "components/domain_reliability/context.h"
 #include "components/domain_reliability/domain_reliability_export.h"
 #include "url/gurl.h"
 
 namespace domain_reliability {
 
 class DOMAIN_RELIABILITY_EXPORT DomainReliabilityContextManager {
@@ skipping 39 matching lines @@
 
   DomainReliabilityContext::Factory* context_factory_;
   // Owns DomainReliabilityContexts.
   ContextMap contexts_;
   // Currently, Domain Reliability only allows header-based configuration by
   // origins that already have baked-in configs. This is the set of origins
   // that have removed their context (by sending "NEL: max-age=0"), so the
   // context manager knows they are allowed to set a config again later.
   std::unordered_set<std::string> removed_contexts_;
 
+  base::TimeTicks last_routed_beacon_time_;
+
   DISALLOW_COPY_AND_ASSIGN(DomainReliabilityContextManager);
 };
 
 }  // namespace domain_reliability
 
 #endif  // COMPONENTS_DOMAIN_RELIABILITY_CONTEXT_MANAGER_H_