Reset the default quota limit for extensions to 5MB, but add a...

webkit/database/database_tracker.h

 // Copyright (c) 2010 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 WEBKIT_DATABASE_DATABASE_TRACKER_H_
 #define WEBKIT_DATABASE_DATABASE_TRACKER_H_
 
 #include <map>
 #include <set>
 
@@ skipping 106 matching lines @@
   void RemoveObserver(Observer* observer);
 
   void CloseTrackerDatabaseAndClearCaches();
 
   const FilePath& DatabaseDirectory() const { return db_dir_; }
   FilePath GetFullDBFilePath(const string16& origin_identifier,
                              const string16& database_name) const;
 
   bool GetAllOriginsInfo(std::vector<OriginInfo>* origins_info);
   void SetOriginQuota(const string16& origin_identifier, int64 new_quota);
+  void SetOriginQuotaInMemory(const string16& origin_identifier,
+                              int64 new_quota);
 
+  int64 GetDefaultQuota() { return default_quota_; }
   // Sets the default quota for all origins. Should be used in tests only.
   void SetDefaultQuota(int64 quota);
 
   bool IsDatabaseScheduledForDeletion(const string16& origin_identifier,
                                       const string16& database_name);
 
   // Deletes a single database. Returns net::OK on success, net::FAILED on
   // failure, or net::ERR_IO_PENDING and |callback| is invoked upon completion,
   // if non-NULL.
   int DeleteDatabase(const string16& origin_identifier,
@@ skipping 71 matching lines @@
   std::map<string16, CachedOriginInfo> origins_info_map_;
   DatabaseConnections database_connections_;
 
   // The set of databases that should be deleted but are still opened
   DatabaseSet dbs_to_be_deleted_;
   PendingCompletionMap deletion_callbacks_;
 
   // Default quota for all origins; changed only by tests
   int64 default_quota_;
 
+  // Store quotas for extensions in memory, in order to prevent writing a row
+  // to quota_table_ every time an extention is loaded.
+  std::map<string16, int64> in_memory_quotas_;
+
   FRIEND_TEST(DatabaseTrackerTest, TestIt);
 };
 
 }  // namespace webkit_database
 
 #endif  // WEBKIT_DATABASE_DATABASE_TRACKER_H_