[FileAPI] Replace default leveldb::Env with leveldb::MemEnv in tests.

webkit/browser/fileapi/sandbox_prioritized_origin_database.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 WEBKIT_BROWSER_FILEAPI_SANDBOX_PRIORITIZED_ORIGIN_DATABASE_H_
 #define WEBKIT_BROWSER_FILEAPI_SANDBOX_PRIORITIZED_ORIGIN_DATABASE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "webkit/browser/fileapi/sandbox_origin_database_interface.h"
 
+namespace leveldb {
+class Env;
+}
+
 namespace fileapi {
 
 class ObfuscatedFileUtil;
 class SandboxIsolatedOriginDatabase;
 class SandboxOriginDatabase;
 
 class WEBKIT_STORAGE_BROWSER_EXPORT_PRIVATE SandboxPrioritizedOriginDatabase
     : public SandboxOriginDatabaseInterface {
  public:
-  explicit SandboxPrioritizedOriginDatabase(
-      const base::FilePath& file_system_directory);
+  SandboxPrioritizedOriginDatabase(const base::FilePath& file_system_directory,
+                                   leveldb::Env* env_override);
   virtual ~SandboxPrioritizedOriginDatabase();
 
   // Sets |origin| as primary origin in this database (e.g. may
   // allow faster access).
   // Returns false if this database already has a primary origin
   // which is different from |origin|.
   bool InitializePrimaryOrigin(const std::string& origin);
   std::string GetPrimaryOrigin();
 
   // SandboxOriginDatabaseInterface overrides.
@@ skipping 13 matching lines @@
   bool ResetPrimaryOrigin(const std::string& origin);
   void MaybeMigrateDatabase(const std::string& origin);
   void MaybeInitializeDatabases(bool create);
   void MaybeInitializeNonPrimaryDatabase(bool create);
 
   // For migration.
   friend class ObfuscatedFileUtil;
   SandboxOriginDatabase* GetSandboxOriginDatabase();
 
   const base::FilePath file_system_directory_;
+  leveldb::Env* env_override_;
   const base::FilePath primary_origin_file_;
   scoped_ptr<SandboxOriginDatabase> origin_database_;
   scoped_ptr<SandboxIsolatedOriginDatabase> primary_origin_database_;
 
   DISALLOW_COPY_AND_ASSIGN(SandboxPrioritizedOriginDatabase);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_BROWSER_FILEAPI_SANDBOX_PRIORITIZED_ORIGIN_DATABASE_H_