[NOT FOR LANDING] Detailed loading traces

content/browser/loader/layered_resource_handler.cc

 // Copyright (c) 2012 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/layered_resource_handler.h"
 
 #include <utility>
-
+#include "base/trace_event/trace_event.h"
 #include "base/logging.h"
 
 namespace content {
 
 LayeredResourceHandler::LayeredResourceHandler(
     net::URLRequest* request,
     scoped_ptr<ResourceHandler> next_handler)
     : ResourceHandler(request), next_handler_(std::move(next_handler)) {}
 
 LayeredResourceHandler::~LayeredResourceHandler() {
+  TRACE_EVENT0("toplevel", "LayeredResourceHandler::~LayeredResourceHandler");
 }
 
 void LayeredResourceHandler::SetController(ResourceController* controller) {
   ResourceHandler::SetController(controller);
 
   // Pass the controller down to the next handler.  This method is intended to
   // be overriden by subclasses of LayeredResourceHandler that need to insert a
   // different ResourceController.
 
   DCHECK(next_handler_.get());
@@ skipping 45 matching lines @@
   DCHECK(next_handler_.get());
   next_handler_->OnResponseCompleted(status, security_info, defer);
 }
 
 void LayeredResourceHandler::OnDataDownloaded(int bytes_downloaded) {
   DCHECK(next_handler_.get());
   next_handler_->OnDataDownloaded(bytes_downloaded);
 }
 
 }  // namespace content