Add a function to add extra headers from NavigationThrottle

content/browser/loader/navigation_resource_handler.cc

 // Copyright 2014 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 "content/browser/loader/navigation_resource_handler.h"
 
 #include "base/logging.h"
 #include "content/browser/devtools/devtools_netlog_observer.h"
 #include "content/browser/loader/navigation_url_loader_impl_core.h"
 #include "content/browser/loader/resource_request_info_impl.h"
@@ skipping 22 matching lines @@
     core_->NotifyRequestFailed(false, net::ERR_ABORTED);
     DetachFromCore();
   }
 }
 
 void NavigationResourceHandler::Cancel() {
   controller()->Cancel();
   core_ = nullptr;
 }
 
-void NavigationResourceHandler::FollowRedirect() {
+void NavigationResourceHandler::FollowRedirect(
+    const std::vector<std::pair<std::string, std::string>>& extra_headers) {
+  for (auto header : extra_headers)
+    request()->SetExtraRequestHeaderByName(header.first, header.second, true);
   controller()->Resume();
 }
 
 void NavigationResourceHandler::SetController(ResourceController* controller) {
   writer_.set_controller(controller);
   ResourceHandler::SetController(controller);
 }
 
 bool NavigationResourceHandler::OnRequestRedirected(
     const net::RedirectInfo& redirect_info,
@@ skipping 84 matching lines @@
   NOTREACHED();
 }
 
 void NavigationResourceHandler::DetachFromCore() {
   DCHECK(core_);
   core_->set_resource_handler(nullptr);
   core_ = nullptr;
 }
 
 }  // namespace content