Use the site engagement eviction policy for temporary storage eviction.

storage/browser/quota/usage_tracker.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_USAGE_TRACKER_H_
 #define STORAGE_BROWSER_QUOTA_USAGE_TRACKER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 28 matching lines @@
   StorageType type() const { return type_; }
   ClientUsageTracker* GetClientTracker(QuotaClient::ID client_id);
 
   void GetGlobalLimitedUsage(const UsageCallback& callback);
   void GetGlobalUsage(const GlobalUsageCallback& callback);
   void GetHostUsage(const std::string& host, const UsageCallback& callback);
   void UpdateUsageCache(QuotaClient::ID client_id,
                         const GURL& origin,
                         int64 delta);
   void GetCachedHostsUsage(std::map<std::string, int64>* host_usage) const;
+  void GetCachedOriginsUsage(std::map<GURL, int64>* origin_usage) const;
   void GetCachedOrigins(std::set<GURL>* origins) const;
   bool IsWorking() const {
     return global_usage_callbacks_.HasCallbacks() ||
            host_usage_callbacks_.HasAnyCallbacks();
   }
 
   void SetUsageCacheEnabled(QuotaClient::ID client_id,
                             const GURL& origin,
                             bool enabled);
 
@@ skipping 32 matching lines @@
 
   StorageMonitor* storage_monitor_;
 
   base::WeakPtrFactory<UsageTracker> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(UsageTracker);
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_QUOTA_USAGE_TRACKER_H_