Add TRACE_EVENT macros to net.

content/browser/loader/resource_loader.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/resource_loader.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/metrics/histogram.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/time/time.h"
+#include "base/trace_event/trace_event.h"
 #include "content/browser/appcache/appcache_interceptor.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/loader/cross_site_resource_handler.h"
 #include "content/browser/loader/detachable_resource_handler.h"
 #include "content/browser/loader/resource_loader_delegate.h"
 #include "content/browser/loader/resource_request_info_impl.h"
 #include "content/browser/service_worker/service_worker_request_handler.h"
 #include "content/browser/ssl/ssl_client_auth_handler.h"
 #include "content/browser/ssl/ssl_manager.h"
 #include "content/browser/ssl/ssl_policy.h"
@@ skipping 212 matching lines @@
   return ResourceRequestInfoImpl::ForRequest(request_.get());
 }
 
 void ResourceLoader::ClearLoginDelegate() {
   login_delegate_ = NULL;
 }
 
 void ResourceLoader::OnReceivedRedirect(net::URLRequest* unused,
                                         const net::RedirectInfo& redirect_info,
                                         bool* defer) {
+  TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("net"),
+               "ResourceLoader::OnReceivedRedirect");
   DCHECK_EQ(request_.get(), unused);
 
   DVLOG(1) << "OnReceivedRedirect: " << request_->url().spec();
   DCHECK(request_->status().is_success());
 
   ResourceRequestInfoImpl* info = GetRequestInfo();
 
   if (info->GetProcessType() != PROCESS_TYPE_PLUGIN &&
       !ChildProcessSecurityPolicyImpl::GetInstance()->
           CanRequestURL(info->GetChildID(), redirect_info.new_url)) {
@@ skipping 65 matching lines @@
                                            bool fatal) {
   ResourceRequestInfoImpl* info = GetRequestInfo();
 
   SSLManager::OnSSLCertificateError(
       weak_ptr_factory_.GetWeakPtr(), info->GetResourceType(), request_->url(),
       info->GetWebContentsGetterForRequest(), ssl_info, fatal);
 }
 
 void ResourceLoader::OnBeforeNetworkStart(net::URLRequest* unused,
                                           bool* defer) {
+  TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("net"),
+               "ResourceLoader::OnBeforeNetworkStart");
   DCHECK_EQ(request_.get(), unused);
 
   // Give the handler a chance to delay the URLRequest from using the network.
   if (!handler_->OnBeforeNetworkStart(request_->url(), defer)) {
     Cancel();
     return;
   } else if (*defer) {
     deferred_stage_ = DEFERRED_NETWORK_START;
   }
 }
 
 void ResourceLoader::OnResponseStarted(net::URLRequest* unused) {
+  TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("net"),
+               "ResourceLoader::OnResponseStarted");
   DCHECK_EQ(request_.get(), unused);
 
   DVLOG(1) << "OnResponseStarted: " << request_->url().spec();
 
   if (!request_->status().is_success()) {
     ResponseCompleted();
     return;
   }
 
   CompleteResponseStarted();
 
   if (is_deferred())
     return;
 
   if (request_->status().is_success())
     StartReading(false);  // Read the first chunk.
   else
     ResponseCompleted();
 }
 
 void ResourceLoader::OnReadCompleted(net::URLRequest* unused, int bytes_read) {
+  TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("net"),
+               "ResourceLoader::OnReadCompleted");
   DCHECK_EQ(request_.get(), unused);
   DVLOG(1) << "OnReadCompleted: \"" << request_->url().spec() << "\""
            << " bytes_read = " << bytes_read;
 
   // bytes_read == -1 always implies an error.
   if (bytes_read == -1 || !request_->status().is_success()) {
     ResponseCompleted();
     return;
   }
 
@@ skipping 225 matching lines @@
 
   // Make sure we track the buffer in at least one place.  This ensures it gets
   // deleted even in the case the request has already finished its job and
   // doesn't use the buffer.
   scoped_refptr<net::IOBuffer> buf;
   int buf_size;
   {
     // TODO(darin): Remove ScopedTracker below once crbug.com/475761 is fixed.
     tracked_objects::ScopedTracker tracking_profile2(
         FROM_HERE_WITH_EXPLICIT_FUNCTION("475761 OnWillRead()"));
+    TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("net"), "ResourceLoader::ReadMore");
 
     if (!handler_->OnWillRead(&buf, &buf_size, -1)) {
       Cancel();
       return;
     }
   }
 
   DCHECK(buf.get());
   DCHECK(buf_size > 0);
 
@@ skipping 95 matching lines @@
       case net::URLRequestStatus::FAILED:
         status = STATUS_UNDEFINED;
         break;
     }
 
     UMA_HISTOGRAM_ENUMERATION("Net.Prefetch.Pattern", status, STATUS_MAX);
   }
 }
 
 }  // namespace content