[NOT FOR LANDING] Detailed loading traces

chrome/browser/net/chrome_network_delegate.cc

Index: chrome/browser/net/chrome_network_delegate.cc
diff --git a/chrome/browser/net/chrome_network_delegate.cc b/chrome/browser/net/chrome_network_delegate.cc
index fa9ba6d35deb4ef81011674c72454785d22cbf36..44c7f6b563aaec2584dbcbeb64c0d5e53bcc0d3d 100644
--- a/chrome/browser/net/chrome_network_delegate.cc
+++ b/chrome/browser/net/chrome_network_delegate.cc
@@ -9,6 +9,7 @@
 
 #include <vector>
 
+#include "base/trace_event/trace_event.h"
 #include "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/debug/alias.h"
@@ -377,11 +378,13 @@ int ChromeNetworkDelegate::OnBeforeURLRequest(
     net::URLRequest* request,
     const net::CompletionCallback& callback,
     GURL* new_url) {
+  TRACE_EVENT0("toplevel", "ChromeNetworkDelegate::OnBeforeURLRequest");
+
   // TODO(mmenke): Remove ScopedTracker below once crbug.com/456327 is fixed.
   tracked_objects::ScopedTracker tracking_profile1(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
           "456327 URLRequest::ChromeNetworkDelegate::OnBeforeURLRequest"));
-
+  TRACE_EVENT0("toplevel", "ChromeNetworkDelegate::OnBeforeURLRequest::A");
 #if defined(ENABLE_CONFIGURATION_POLICY)
   // TODO(joaodasilva): This prevents extensions from seeing URLs that are
   // blocked. However, an extension might redirect the request to another URL,
@@ -401,14 +404,14 @@ int ChromeNetworkDelegate::OnBeforeURLRequest(
     return error;
   }
 #endif
-
+  TRACE_EVENT0("toplevel", "ChromeNetworkDelegate::OnBeforeURLRequest::A.1");
   // TODO(mmenke): Remove ScopedTracker below once crbug.com/456327 is fixed.
   tracked_objects::ScopedTracker tracking_profile2(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
           "456327 URLRequest::ChromeNetworkDelegate::OnBeforeURLRequest 2"));
 
   extensions_delegate_->ForwardStartRequestStatus(request);
-
+  TRACE_EVENT0("toplevel", "ChromeNetworkDelegate::OnBeforeURLRequest::B");
   if (!enable_referrers_->GetValue())
     request->SetReferrer(std::string());
   if (enable_do_not_track_ && enable_do_not_track_->GetValue())
@@ -429,10 +432,10 @@ int ChromeNetworkDelegate::OnBeforeURLRequest(
                                   base::Unretained(request),
                                   base::Unretained(new_url));
   }
-
+  TRACE_EVENT0("toplevel", "ChromeNetworkDelegate::OnBeforeURLRequest::C");
   int rv = extensions_delegate_->OnBeforeURLRequest(
       request, wrapped_callback, new_url);
-
+  TRACE_EVENT0("toplevel", "ChromeNetworkDelegate::OnBeforeURLRequest::C.1");
   // TODO(mmenke): Remove ScopedTracker below once crbug.com/456327 is fixed.
   tracked_objects::ScopedTracker tracking_profile4(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
@@ -440,7 +443,7 @@ int ChromeNetworkDelegate::OnBeforeURLRequest(
 
   if (force_safe_search && rv == net::OK && new_url->is_empty())
     safe_search_util::ForceGoogleSafeSearch(request, new_url);
-
+  TRACE_EVENT0("toplevel", "ChromeNetworkDelegate::OnBeforeURLRequest::C.2");
   // TODO(mmenke): Remove ScopedTracker below once crbug.com/456327 is fixed.
   tracked_objects::ScopedTracker tracking_profile5(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
@@ -448,7 +451,7 @@ int ChromeNetworkDelegate::OnBeforeURLRequest(
 
   if (connect_interceptor_)
     connect_interceptor_->WitnessURLRequest(request);
-
+  TRACE_EVENT0("toplevel", "ChromeNetworkDelegate::OnBeforeURLRequest::C.3");
   return rv;
 }
 
@@ -515,6 +518,7 @@ void ChromeNetworkDelegate::OnNetworkBytesSent(net::URLRequest* request,
 
 void ChromeNetworkDelegate::OnCompleted(net::URLRequest* request,
                                         bool started) {
+  TRACE_EVENT0("toplevel", "ChromeNetworkDelegate::OnCompleted");
   // TODO(amohammadkhan): Verify that there is no double recording in data use
   // of redirected requests.
   data_use_measurement_.ReportDataUseUMA(request);
@@ -579,6 +583,7 @@ ChromeNetworkDelegate::OnAuthRequired(
 bool ChromeNetworkDelegate::OnCanGetCookies(
     const net::URLRequest& request,
     const net::CookieList& cookie_list) {
+  TRACE_EVENT0("toplevel", "ChromeNetworkDelegate::OnCanGetCookies");
   // NULL during tests, or when we're running in the system context.
   if (!cookie_settings_.get())
     return true;