Add access count and time-since-accessed histograms to temp storage eviction.

storage/browser/quota/quota_manager.h

 // Copyright 2013 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 STORAGE_BROWSER_QUOTA_QUOTA_MANAGER_H_
 #define STORAGE_BROWSER_QUOTA_QUOTA_MANAGER_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 259 matching lines @@
 
   static const int64 kPerHostPersistentQuotaLimit;
 
   static const char kDatabaseName[];
 
   static const int kThresholdOfErrorsToBeBlacklisted;
 
   static const int kEvictionIntervalInMilliSeconds;
 
   static const char kTimeBetweenRepeatedOriginEvictionsHistogram[];
+  static const char kEvictedOriginAccessedCountHistogram[];
+  static const char kEvictedOriginTimeSinceAccessHistogram[];
 
   // These are kept non-const so that test code can change the value.
   // TODO(kinuko): Make this a real const value and add a proper way to set
   // the quota for syncable storage. (http://crbug.com/155488)
   static int64 kMinimumPreserveForSystem;
   static int64 kSyncableStorageDefaultHostQuota;
 
  protected:
   ~QuotaManager() override;
 
@@ skipping 206 matching lines @@
 
 struct QuotaManagerDeleter {
   static void Destruct(const QuotaManager* manager) {
     manager->DeleteOnCorrectThread();
   }
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_QUOTA_QUOTA_MANAGER_H_