SyncFS: Introduce SyncFileSystemBackend

webkit/browser/fileapi/syncable/syncable_file_system_operation.cc

 // 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.
 
 #include "webkit/browser/fileapi/syncable/syncable_file_system_operation.h"
 
 #include "base/logging.h"
 #include "net/url_request/url_request.h"
 #include "webkit/browser/fileapi/file_system_context.h"
 #include "webkit/browser/fileapi/file_system_operation_context.h"
 #include "webkit/browser/fileapi/file_system_url.h"
 #include "webkit/browser/fileapi/local_file_system_operation.h"
 #include "webkit/browser/fileapi/sandbox_file_system_backend.h"
 #include "webkit/browser/fileapi/syncable/local_file_sync_context.h"
+#include "webkit/browser/fileapi/syncable/sync_file_system_backend.h"
 #include "webkit/browser/fileapi/syncable/syncable_file_operation_runner.h"
 #include "webkit/browser/fileapi/syncable/syncable_file_system_util.h"
 #include "webkit/common/blob/shareable_file_reference.h"
 
 using fileapi::FileSystemURL;
 using fileapi::FileSystemOperationContext;
 using fileapi::LocalFileSystemOperation;
 
 namespace sync_file_system {
 
@@ skipping 286 matching lines @@
 }
 
 SyncableFileSystemOperation::SyncableFileSystemOperation(
     const FileSystemURL& url,
     fileapi::FileSystemContext* file_system_context,
     scoped_ptr<FileSystemOperationContext> operation_context)
     : LocalFileSystemOperation(url, file_system_context,
                                operation_context.Pass()),
       url_(url) {
   DCHECK(file_system_context);
-  if (!file_system_context->sync_context()) {
+  SyncFileSystemBackend* backend =
+      SyncFileSystemBackend::GetBackend(file_system_context);
+  DCHECK(backend);
+  if (!backend->sync_context()) {
     // Syncable FileSystem is opened in a file system context which doesn't
     // support (or is not initialized for) the API.
     // Returning here to leave operation_runner_ as NULL.
     return;
   }
-  operation_runner_ = file_system_context->sync_context()->operation_runner();
+  operation_runner_ = backend->sync_context()->operation_runner();
   is_directory_operation_enabled_ = IsSyncFSDirectoryOperationEnabled();
 }
 
 LocalFileSystemOperation* SyncableFileSystemOperation::NewOperation() {
   DCHECK(operation_context_);
   inflight_operation_.reset(new LocalFileSystemOperation(
       url_, file_system_context(), operation_context_.Pass()));
   DCHECK(inflight_operation_);
   return inflight_operation_.get();
 }
@@ skipping 20 matching lines @@
     operation_runner_->OnOperationCompleted(target_paths_);
   callback.Run(result, bytes, complete);
 }
 
 void SyncableFileSystemOperation::OnCancelled() {
   DCHECK(!completion_callback_.is_null());
   completion_callback_.Run(base::PLATFORM_FILE_ERROR_ABORT);
 }
 
 }  // namespace sync_file_system