Http cache: Always preserve extra headers when dealing with...

net/http/partial_data.h

 // Copyright (c) 2009 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_HTTP_PARTIAL_DATA_H_
 #define NET_HTTP_PARTIAL_DATA_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 20 matching lines @@
 // of those individual network / cache requests.
 class PartialData {
  public:
   PartialData()
       : range_present_(false), final_range_(false), sparse_entry_(true),
         truncated_(false) {}
   ~PartialData() {}
 
   // Performs initialization of the object by parsing the request |headers|
   // and verifying that we can process the requested range. Returns true if
-  // we can process the requested range, and false otherwise. |new_headers| is
-  // a subset of the request extra headers, with byte-range related headers
-  // removed so that we can easily add any byte-range that we need.
-  bool Init(const std::string& headers, const std::string& new_headers);
+  // we can process the requested range, and false otherwise.
+  bool Init(const std::string& headers);
+
+  // Sets the headers that we should use to make byte range requests. This is a
+  // subset of the request extra headers, with byte-range related headers
+  // removed.
+  void SetHeaders(const std::string& headers);
 
   // Restores the byte-range header that was removed during Init(), by appending
   // the data to the provided |headers|.
   void RestoreHeaders(std::string* headers) const;
 
   // Builds the required |headers| to perform the proper cache validation for
   // the next range to be fetched. Returns 0 when there is no need to perform
   // more operations because we reached the end of the request (so 0 bytes
   // should be actually returned to the user), a positive number to indicate
   // that |headers| should be used to validate the cache, or an appropriate
@@ skipping 59 matching lines @@
   bool final_range_;
   bool sparse_entry_;
   bool truncated_;  // We have an incomplete 200 stored.
 
   DISALLOW_COPY_AND_ASSIGN(PartialData);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_PARTIAL_DATA_H_