Add 'Dump Database' tab to syncfs-internals (only for v2 for now)

chrome/browser/sync_file_system/drive_backend/sync_engine.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_DRIVE_BACKEND_SYNC_ENGINE_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_ENGINE_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
@@ skipping 60 matching lines @@
       UninstallFlag flag,
       const SyncStatusCallback& callback) OVERRIDE;
   virtual void ProcessRemoteChange(const SyncFileCallback& callback) OVERRIDE;
   virtual void SetRemoteChangeProcessor(
       RemoteChangeProcessor* processor) OVERRIDE;
   virtual LocalChangeProcessor* GetLocalChangeProcessor() OVERRIDE;
   virtual bool IsConflicting(const fileapi::FileSystemURL& url) OVERRIDE;
   virtual RemoteServiceState GetCurrentState() const OVERRIDE;
   virtual void GetOriginStatusMap(OriginStatusMap* status_map) OVERRIDE;
   virtual scoped_ptr<base::ListValue> DumpFiles(const GURL& origin) OVERRIDE;
+  virtual scoped_ptr<base::ListValue> DumpDatabase() OVERRIDE;
   virtual void SetSyncEnabled(bool enabled) OVERRIDE;
   virtual SyncStatusCode SetConflictResolutionPolicy(
       ConflictResolutionPolicy policy) OVERRIDE;
   virtual ConflictResolutionPolicy GetConflictResolutionPolicy() const OVERRIDE;
   virtual void GetRemoteVersions(
       const fileapi::FileSystemURL& url,
       const RemoteVersionsCallback& callback) OVERRIDE;
   virtual void DownloadRemoteVersion(
       const fileapi::FileSystemURL& url,
       const std::string& version_id,
@@ skipping 97 matching lines @@
 
   base::WeakPtrFactory<SyncEngine> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncEngine);
 };
 
 }  // namespace drive_backend
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_ENGINE_H_