Revert of [subresource_filter] Remove Forwarding NavigationThrottles

content/public/test/navigation_simulator.cc

 // Copyright 2017 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/public/test/navigation_simulator.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "content/browser/frame_host/navigation_handle_impl.h"
@@ skipping 465 matching lines @@
   CHECK_LE(state_, STARTED) << "The referrer cannot be set after the "
                                "navigation has committed or has failed";
   referrer_ = referrer;
 }
 
 NavigationThrottle::ThrottleCheckResult
 NavigationSimulator::GetLastThrottleCheckResult() {
   return last_throttle_check_result_.value();
 }
 
-NavigationHandle* NavigationSimulator::GetNavigationHandle() const {
-  CHECK_EQ(STARTED, state_);
-  return handle_;
-}
-
 void NavigationSimulator::DidStartNavigation(
     NavigationHandle* navigation_handle) {
   // Check if this navigation is the one we're simulating.
   if (handle_)
     return;
 
   if (navigation_handle->GetURL() != navigation_url_)
     return;
 
   NavigationHandleImpl* handle =
@@ skipping 120 matching lines @@
   if (!should_result_in_error_page) {
     render_frame_host_->OnMessageReceived(
         FrameHostMsg_DidStopLoading(render_frame_host_->GetRoutingID()));
     CHECK_EQ(1, num_did_finish_navigation_called_);
   } else {
     CHECK_EQ(0, num_did_finish_navigation_called_);
   }
 }
 
 }  // namespace content