PlzNavigate: support NavigationThrottle::WillProcessResponse

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 26 matching lines @@
 
 void NavigationResourceHandler::Cancel() {
   controller()->Cancel();
   core_ = nullptr;
 }
 
 void NavigationResourceHandler::FollowRedirect() {
   controller()->Resume();
 }
 
+void NavigationResourceHandler::ProceedWithResponse() {
+  // Detach from the loader; at this point, the request is now owned by the
+  // StreamHandle sent in OnResponseStarted.
+  DetachFromCore();
+  controller()->Resume();
+}
+
 void NavigationResourceHandler::SetController(ResourceController* controller) {
   writer_.set_controller(controller);
   ResourceHandler::SetController(controller);
 }
 
 bool NavigationResourceHandler::OnRequestRedirected(
     const net::RedirectInfo& redirect_info,
     ResourceResponse* response,
     bool* defer) {
   DCHECK(core_);
@@ skipping 20 matching lines @@
   // all the way to the UI thread. Downloads, user certificates, etc., should be
   // dispatched at the navigation layer.
   if (info->IsDownload() || info->is_stream())
     return true;
 
   StreamContext* stream_context =
       GetStreamContextForResourceContext(info->GetContext());
   writer_.InitializeStream(stream_context->registry(),
                            request()->url().GetOrigin());
 
-  // Detach from the loader; at this point, the request is now owned by the
-  // StreamHandle.
   DevToolsNetLogObserver::PopulateResponseInfo(request(), response);
   core_->NotifyResponseStarted(response, writer_.stream()->CreateHandle());
-  DetachFromCore();
+  *defer = true;
   return true;
 }
 
 bool NavigationResourceHandler::OnWillStart(const GURL& url, bool* defer) {
   return true;
 }
 
 bool NavigationResourceHandler::OnBeforeNetworkStart(const GURL& url,
                                                      bool* defer) {
   return true;
@@ skipping 36 matching lines @@
   NOTREACHED();
 }
 
 void NavigationResourceHandler::DetachFromCore() {
   DCHECK(core_);
   core_->set_resource_handler(nullptr);
   core_ = nullptr;
 }
 
 }  // namespace content