Delay generation of User-Agent header to URLRequestHttpJob and accept custom User-Agent from XHR/Fe…

content/common/resource_request.h

 // Copyright 2016 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 CONTENT_COMMON_RESOURCE_REQUEST_H_
 #define CONTENT_COMMON_RESOURCE_REQUEST_H_
 
 #include <stdint.h>
 #include <string>
 
@@ skipping 43 matching lines @@
   // The referrer policy to use.
   blink::WebReferrerPolicy referrer_policy = blink::WebReferrerPolicyAlways;
 
   // The frame's visiblity state.
   blink::WebPageVisibilityState visiblity_state =
       blink::WebPageVisibilityStateVisible;
 
   // Additional HTTP request headers.
   std::string headers;
 
+  // The User-Agent string specified by the renderer to send in case |headers|
+  // results to get no entry named "User-Agent".
+  std::string default_user_agent;
+
   // net::URLRequest load flags (0 by default).
   int load_flags = 0;
 
   // Process ID from which this request originated, or zero if it originated
   // in the renderer itself.
   int origin_pid = 0;
 
   // What this resource load is for (main frame, sub-frame, sub-resource,
   // object).
   ResourceType resource_type = RESOURCE_TYPE_MAIN_FRAME;
@@ skipping 97 matching lines @@
   // browser.
   GURL resource_body_stream_url;
 
   // Wether or not the initiator of this request is a secure context.
   bool initiated_in_secure_context = false;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_RESOURCE_REQUEST_H_