Add Quota.TimeSinceOriginEvicted UMA histogram.

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 248 matching lines @@
   static const int kPerHostTemporaryPortion;
 
   static const int64 kPerHostPersistentQuotaLimit;
 
   static const char kDatabaseName[];
 
   static const int kThresholdOfErrorsToBeBlacklisted;
 
   static const int kEvictionIntervalInMilliSeconds;
 
+  static const char kTimeBetweenOriginEvictionsHistogram[];
+
   // 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;
 
  private:
@@ skipping 75 matching lines @@
   void NotifyStorageModifiedInternal(
       QuotaClient::ID client_id,
       const GURL& origin,
       StorageType type,
       int64 delta,
       base::Time modified_time);
 
   void DumpQuotaTable(const DumpQuotaTableCallback& callback);
   void DumpOriginInfoTable(const DumpOriginInfoTableCallback& callback);
 
+  void DeleteOriginDataInternal(const GURL& origin,
+                                StorageType type,
+                                int quota_client_mask,
+                                bool is_eviction,
+                                const StatusCallback& callback);
+
   // Methods for eviction logic.
   void StartEviction();
-  void DeleteOriginFromDatabase(const GURL& origin, StorageType type);
+  void DeleteOriginFromDatabase(const GURL& origin,
+                                StorageType type,
+                                bool is_eviction);
 
   void DidOriginDataEvicted(QuotaStatusCode status);
 
   void ReportHistogram();
   void DidGetTemporaryGlobalUsageForHistogram(int64 usage,
                                               int64 unlimited_usage);
   void DidGetPersistentGlobalUsageForHistogram(int64 usage,
                                                int64 unlimited_usage);
 
   // QuotaEvictionHandler.
@@ skipping 91 matching lines @@
 
 struct QuotaManagerDeleter {
   static void Destruct(const QuotaManager* manager) {
     manager->DeleteOnCorrectThread();
   }
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_QUOTA_QUOTA_MANAGER_H_