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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_BROWSER_LOADER_UPLOAD_DATA_STREAM_BUILDER_H_
      6 #define CONTENT_BROWSER_LOADER_UPLOAD_DATA_STREAM_BUILDER_H_
      7 
      8 #include "base/memory/scoped_ptr.h"
      9 #include "content/common/content_export.h"
     10 
     11 namespace base {
     12 class TaskRunner;
     13 }
     14 
     15 namespace storage {
     16 class FileSystemContext;
     17 }
     18 
     19 namespace net {
     20 class UploadDataStream;
     21 }
     22 
     23 namespace storage {
     24 class BlobStorageContext;
     25 }
     26 
     27 namespace content {
     28 
     29 class ResourceRequestBody;
     30 
     31 class CONTENT_EXPORT UploadDataStreamBuilder {
     32  public:
     33   // Creates a new UploadDataStream from this request body.
     34   //
     35   // If |body| contains any blob references, the caller is responsible for
     36   // making sure them outlive the returned value of UploadDataStream. We do this
     37   // by binding the BlobDataHandles of them to ResourceRequestBody in
     38   // ResourceDispatcherHostImpl::BeginRequest().
     39   //
     40   // |file_system_context| is used to create a FileStreamReader for files with
     41   // filesystem URLs.  |file_task_runner| is used to perform file operations
     42   // when the data gets uploaded.
     43   static scoped_ptr<net::UploadDataStream> Build(
     44       ResourceRequestBody* body,
     45       storage::BlobStorageContext* blob_context,
     46       storage::FileSystemContext* file_system_context,
     47       base::TaskRunner* file_task_runner);
     48 };
     49 
     50 }  // namespace content
     51 
     52 #endif  // CONTENT_BROWSER_LOADER_UPLOAD_DATA_STREAM_BUILDER_H_
     53