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

chrome/browser/sync_file_system/local/local_file_sync_service.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 CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_SYNC_SERVICE_H_
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "chrome/browser/sync_file_system/local/local_origin_change_observer.h"
 #include "chrome/browser/sync_file_system/remote_change_processor.h"
 #include "chrome/browser/sync_file_system/sync_callbacks.h"
 #include "chrome/browser/sync_file_system/sync_status_code.h"
 
 class GURL;
 class Profile;
 
 namespace fileapi {
 class FileSystemContext;
 }
 
+namespace leveldb {
+class Env;
+}
+
 namespace webkit_blob {
 class ScopedFile;
 }
 
 namespace sync_file_system {
 
 class FileChange;
 class LocalChangeProcessor;
 class LocalFileSyncContext;
 struct LocalFileSyncInfo;
@@ skipping 20 matching lines @@
     virtual void OnLocalChangeAvailable(int64 pending_changes_hint) = 0;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(Observer);
   };
 
   typedef base::Callback<void(SyncStatusCode status,
                               bool has_pending_changes)>
       HasPendingLocalChangeCallback;
 
-  explicit LocalFileSyncService(Profile* profile);
+  static scoped_ptr<LocalFileSyncService> Create(Profile* profile);
+  static scoped_ptr<LocalFileSyncService> CreateForTesting(
+      Profile* profile,
+      leveldb::Env* env_override);
   virtual ~LocalFileSyncService();
 
   void Shutdown();
 
   void MaybeInitializeFileSystemContext(
       const GURL& app_origin,
       fileapi::FileSystemContext* file_system_context,
       const SyncStatusCallback& callback);
 
   void AddChangeObserver(Observer* observer);
@@ skipping 95 matching lines @@
 
    private:
     // Per-origin changes (cached info, could be stale).
     Map change_count_map_;
     Map::iterator next_;
 
     // Holds a set of disabled (but initialized) origins.
     std::set<GURL> disabled_origins_;
   };
 
+  LocalFileSyncService(Profile* profile, leveldb::Env* env_override);
+
   void DidInitializeFileSystemContext(
       const GURL& app_origin,
       fileapi::FileSystemContext* file_system_context,
       const SyncStatusCallback& callback,
       SyncStatusCode status);
   void DidInitializeForRemoteSync(
       const fileapi::FileSystemURL& url,
       fileapi::FileSystemContext* file_system_context,
       const PrepareChangeCallback& callback,
       SyncStatusCode status);
@@ skipping 47 matching lines @@
   GetLocalChangeProcessorCallback get_local_change_processor_;
 
   ObserverList<Observer> change_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(LocalFileSyncService);
 };
 
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_SYNC_SERVICE_H_