Net module changes to support caching responses to a POST request.

net/base/upload_data.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.
 
 #ifndef NET_BASE_UPLOAD_DATA_H_
 #define NET_BASE_UPLOAD_DATA_H_
 
 #include <string>
 #include <vector>
 
 #include "base/ref_counted.h"
 
 namespace net {
 
 class UploadData : public base::RefCounted<UploadData> {
  public:
-  UploadData() {}
+  UploadData() : identifier_(0) {}
 
   enum Type {
     TYPE_BYTES,
     TYPE_FILE
   };
 
   class Element {
    public:
     Element() : type_(TYPE_BYTES), file_range_offset_(0),
                 file_range_length_(kuint64max) {
@@ skipping 56 matching lines @@
   uint64 GetContentLength() const;
 
   const std::vector<Element>& elements() const {
     return elements_;
   }
 
   void set_elements(const std::vector<Element>& elements) {
     elements_ = 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.
+  void set_identifier(int64 id) { identifier_ = id; }
+  int64 identifier() const { return identifier_; }
+
  private:
-   std::vector<Element> elements_;
+  std::vector<Element> elements_;
+  int64 identifier_;
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_UPLOAD_DATA_H_