Support sending a sliced file in chromium....

webkit/glue/resource_loader_bridge.h

 // Copyright (c) 2006-2008 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.
 //
 // The intent of this file is to provide a type-neutral abstraction between
 // Chrome and WebKit for resource loading. This pure-virtual interface is
 // implemented by the embedder, which also provides a factory method Create
 // to instantiate this object.
 //
 // One of these objects will be created by WebKit for each request. WebKit
@@ skipping 190 matching lines @@
   // methods may be called to construct the body of the request.
   static ResourceLoaderBridge* Create(const RequestInfo& request_info);
 
   // Call this method before calling Start() to append a chunk of binary data
   // to the request body.  May only be used with HTTP(S) POST requests.
   virtual void AppendDataToUpload(const char* data, int data_len) = 0;
 
   // Call this method before calling Start() to append the contents of a file
   // to the request body.  May only be used with HTTP(S) POST requests.
   void AppendFileToUpload(const FilePath& file_path) {
-    AppendFileRangeToUpload(file_path, 0, kuint64max);
+    AppendFileRangeToUpload(file_path, 0, kuint64max, base::Time());
   }
 
   // Call this method before calling Start() to append the contents of a file
   // to the request body.  May only be used with HTTP(S) POST requests.
-  virtual void AppendFileRangeToUpload(const FilePath& file_path,
-                                       uint64 offset, uint64 length) = 0;
+  virtual void AppendFileRangeToUpload(
+      const FilePath& file_path,
+      uint64 offset,
+      uint64 length,
+      const base::Time& expected_modification_time) = 0;
 
   // Call this method before calling Start() to assign an upload identifier to
   // this request.  This is used to enable caching of POST responses.  A value
   // of 0 implies the unspecified identifier.
   virtual void SetUploadIdentifier(int64 identifier) = 0;
 
   // Call this method to initiate the request.  If this method succeeds, then
   // the peer's methods will be called asynchronously to report various events.
   virtual bool Start(Peer* peer) = 0;
 
@@ skipping 20 matching lines @@
   // construction must go through Create()
   ResourceLoaderBridge();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ResourceLoaderBridge);
 };
 
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_RESOURCE_LOADER_BRIDGE_H_