Update from https://crrev.com/315085

net/url_request/url_request.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 NET_URL_REQUEST_URL_REQUEST_H_
 #define NET_URL_REQUEST_URL_REQUEST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 64 matching lines @@
                               public base::SupportsUserData {
  public:
   // Callback function implemented by protocol handlers to create new jobs.
   // The factory may return NULL to indicate an error, which will cause other
   // factories to be queried.  If no factory handles the request, then the
   // default job will be used.
   typedef URLRequestJob* (ProtocolFactory)(URLRequest* request,
                                            NetworkDelegate* network_delegate,
                                            const std::string& scheme);
 
-  // HTTP request/response header IDs (via some preprocessor fun) for use with
-  // SetRequestHeaderById and GetResponseHeaderById.
-  enum {
-#define HTTP_ATOM(x) HTTP_ ## x,
-#include "net/http/http_atom_list.h"
-#undef HTTP_ATOM
-  };
-
   // Referrer policies (see set_referrer_policy): During server redirects, the
   // referrer header might be cleared, if the protocol changes from HTTPS to
   // HTTP. This is the default behavior of URLRequest, corresponding to
   // CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE. Alternatively, the
   // referrer policy can be set to strip the referrer down to an origin upon
   // cross-origin navigation (ORIGIN_ONLY_ON_TRANSITION_CROSS_ORIGIN), or
   // never change the referrer header (NEVER_CLEAR_REFERRER). Embedders will
   // want to use these options when implementing referrer policy support
   // (https://w3c.github.io/webappsec/specs/referrer-policy/).
   //
@@ skipping 224 matching lines @@
 
   // Sets the upload data.
   void set_upload(scoped_ptr<UploadDataStream> upload);
 
   // Gets the upload data.
   const UploadDataStream* get_upload() const;
 
   // Returns true if the request has a non-empty message body to upload.
   bool has_upload() const;
 
-  // Set an extra request header by ID or name, or remove one by name.  These
-  // methods may only be called before Start() is called, or before a new
-  // redirect in the request chain.
-  void SetExtraRequestHeaderById(int header_id, const std::string& value,
-                                 bool overwrite);
+  // Set or remove a extra request header.  These methods may only be called
+  // before Start() is called, or between receiving a redirect and trying to
+  // follow it.
   void SetExtraRequestHeaderByName(const std::string& name,
                                    const std::string& value, bool overwrite);
   void RemoveRequestHeaderByName(const std::string& name);
 
   // Sets all extra request headers.  Any extra request headers set by other
   // methods are overwritten by this method.  This method may only be called
   // before Start() is called.  It is an error to call it later.
   void SetExtraRequestHeaders(const HttpRequestHeaders& headers);
 
   const HttpRequestHeaders& extra_request_headers() const {
@@ skipping 42 matching lines @@
   void LogAndReportBlockedBy(const char* blocked_by);
 
   // Logs that the request is no longer blocked by the last caller to
   // LogBlockedBy.
   void LogUnblocked();
 
   // Returns the current upload progress in bytes. When the upload data is
   // chunked, size is set to zero, but position will not be.
   UploadProgress GetUploadProgress() const;
 
-  // Get response header(s) by ID or name.  These methods may only be called
+  // Get response header(s) by name.  This method may only be called
   // once the delegate's OnResponseStarted method has been called.  Headers
   // that appear more than once in the response are coalesced, with values
   // separated by commas (per RFC 2616). This will not work with cookies since
   // comma can be used in cookie values.
-  // TODO(darin): add API to enumerate response headers.
-  void GetResponseHeaderById(int header_id, std::string* value);
   void GetResponseHeaderByName(const std::string& name, std::string* value);
 
-  // Get all response headers, \n-delimited and \n\0-terminated.  This includes
-  // the response status line.  Restrictions on GetResponseHeaders apply.
-  void GetAllResponseHeaders(std::string* headers);
-
   // The time when |this| was constructed.
   base::TimeTicks creation_time() const { return creation_time_; }
 
   // The time at which the returned response was requested.  For cached
   // responses, this is the last time the cache entry was validated.
   const base::Time& request_time() const {
     return response_info_.request_time;
   }
 
   // The time at which the returned response was generated.  For cached
@@ skipping 415 matching lines @@
 
   // The proxy server used for this request, if any.
   HostPortPair proxy_server_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequest);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_H_