NavigationThrottle: allow customization of net::Error when blocking

components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.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 "components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/metrics/histogram_macros.h"
@@ skipping 26 matching lines @@
                        base::OnTaskRunnerDeleter(io_task_runner_)) {}
 
 SubresourceFilterSafeBrowsingActivationThrottle::
     ~SubresourceFilterSafeBrowsingActivationThrottle() {
   // TODO(csharrison): Log metrics based on check_results_.
 }
 
 content::NavigationThrottle::ThrottleCheckResult
 SubresourceFilterSafeBrowsingActivationThrottle::WillStartRequest() {
   CheckCurrentUrl();
-  return content::NavigationThrottle::ThrottleCheckResult::PROCEED;
+  return content::NavigationThrottle::PROCEED;
 }
 
 content::NavigationThrottle::ThrottleCheckResult
 SubresourceFilterSafeBrowsingActivationThrottle::WillRedirectRequest() {
   CheckCurrentUrl();
-  return content::NavigationThrottle::ThrottleCheckResult::PROCEED;
+  return content::NavigationThrottle::PROCEED;
 }
 
 content::NavigationThrottle::ThrottleCheckResult
 SubresourceFilterSafeBrowsingActivationThrottle::WillProcessResponse() {
   if (!database_client_)
     return content::NavigationThrottle::PROCEED;
 
   // No need to defer the navigation if the check already happened.
   if (check_results_.back().finished) {
     NotifyResult();
-    return content::NavigationThrottle::ThrottleCheckResult::PROCEED;
+    return content::NavigationThrottle::PROCEED;
   }
   defer_time_ = base::TimeTicks::Now();
-  return content::NavigationThrottle::ThrottleCheckResult::DEFER;
+  return content::NavigationThrottle::DEFER;
 }
 
 const char*
 SubresourceFilterSafeBrowsingActivationThrottle::GetNameForLogging() {
   return "SubresourceFilterSafeBrowsingActivationThrottle";
 }
 
 void SubresourceFilterSafeBrowsingActivationThrottle::OnCheckUrlResultOnUI(
     const SubresourceFilterSafeBrowsingClient::CheckResult& result) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
@@ skipping 46 matching lines @@
   // speculatively checks URLs on WillStartRequest. This is only different from
   // the actual delay if there was at least one redirect.
   base::TimeDelta no_redirect_speculation_delay =
       check_results_.size() > 1 ? result.check_time : delay;
   UMA_HISTOGRAM_TIMES(
       "SubresourceFilter.PageLoad.SafeBrowsingDelay.NoRedirectSpeculation",
       no_redirect_speculation_delay);
 }
 
 }  //  namespace subresource_filter