net: Stop using base::WorkerPool from UploadFileElementReader

webkit/glue/resource_request_body.h

 // Copyright (c) 2012 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_GLUE_RESOURCE_REQUEST_BODY_H_
 #define WEBKIT_GLUE_RESOURCE_REQUEST_BODY_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/supports_user_data.h"
 #include "webkit/base/data_element.h"
 #include "webkit/glue/webkit_glue_export.h"
 
+namespace base {
+class TaskRunner;
+}
+
 namespace net {
 class UploadDataStream;
 }
 
 namespace webkit_blob {
 class BlobStorageController;
 }
 
 namespace webkit_glue {
 
 // A struct used to represent upload data. The data field is populated by
 // WebURLLoader from the data given as WebHTTPBody.
 class WEBKIT_GLUE_EXPORT ResourceRequestBody
     : public base::RefCounted<ResourceRequestBody>,
       public base::SupportsUserData {
  public:
   typedef webkit_base::DataElement Element;
 
   ResourceRequestBody();
 
   void AppendBytes(const char* bytes, int bytes_len);
   void AppendFileRange(const FilePath& file_path,
                        uint64 offset, uint64 length,
                        const base::Time& expected_modification_time);
   void AppendBlob(const GURL& blob_url);
   void AppendFileSystemFileRange(const GURL& url, uint64 offset, uint64 length,
                                  const base::Time& expected_modification_time);
 
   // Creates a new UploadDataStream from this request body. This also resolves
-  // any blob references using given |blob_controller|.
-  // TODO(kinuko): Clean up this hack.
+  // any blob references using given |blob_controller|. |task_runner| is used to
+  // perform file operations when the data gets uploaded.
   net::UploadDataStream* ResolveElementsAndCreateUploadDataStream(
-      webkit_blob::BlobStorageController* blob_controller);
+      webkit_blob::BlobStorageController* blob_controller,
+      base::TaskRunner* task_runner);
 
   const std::vector<Element>* elements() const { return &elements_; }
   std::vector<Element>* elements_mutable() { return &elements_; }
   void swap_elements(std::vector<Element>* elements) {
     elements_.swap(*elements);
   }
 
   // Identifies a particular upload instance, which is used by the cache to
   // formulate a cache key.  This value should be unique across browser
   // sessions.  A value of 0 is used to indicate an unspecified identifier.
@@ skipping 12 matching lines @@
 
   std::vector<Element> elements_;
   int64 identifier_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceRequestBody);
 };
 
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_RESOURCE_REQUEST_BODY_H_