Use FilterContext to allow filters to access URLRequestJob data...

net/url_request/url_request_file_dir_job.cc

 // 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.
 
 #include "net/url_request/url_request_file_dir_job.h"
 
 #include "base/file_util.h"
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "base/time.h"
@@ skipping 68 matching lines @@
     return true;
 
   // We are waiting for more data
   read_pending_ = true;
   read_buffer_ = buf;
   read_buffer_length_ = buf_size;
   SetStatus(URLRequestStatus(URLRequestStatus::IO_PENDING, 0));
   return false;
 }
 
-bool URLRequestFileDirJob::GetMimeType(string* mime_type) {
+bool URLRequestFileDirJob::GetMimeType(string* mime_type) const {
   *mime_type = "text/html";
   return true;
 }
 
 bool URLRequestFileDirJob::GetCharset(string* charset) {
   // All the filenames are converted to UTF-8 before being added.
   *charset = "utf-8";
   return true;
 }
 
@@ skipping 113 matching lines @@
     replacements.SetPathStr(new_path);
 
     *location = request_->url().ReplaceComponents(replacements);
     *http_status_code = 301;  // simulate a permanent redirect
     return true;
   }
 
   return false;
 }