Log the PLT to the log file. This is a convenience for

debugging.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/330030

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30252 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 26 insertions, 0 deletions

diff --git a/chrome/renderer/render_view.cc b/chrome/renderer/render_view.cc
index 2cc7ad1..b57d3ce 100644
--- a/chrome/renderer/render_view.cc
+++ b/chrome/renderer/render_view.cc
@@ -3420,6 +3420,8 @@ void RenderView::DumpLoadHistograms() const {
   if (navigation_state->load_histograms_recorded() || finish.is_null())
     return;
 
+  LogNavigationState(navigation_state, main_frame->dataSource());
+
   Time request = navigation_state->request_time();
   Time start = navigation_state->start_load_time();
   Time commit = navigation_state->commit_load_time();
@@ -3568,6 +3570,25 @@ void RenderView::DumpLoadHistograms() const {
   navigation_state->set_load_histograms_recorded(true);
 }
 
+void RenderView::LogNavigationState(const NavigationState* state,
+                                    const WebDataSource* ds) const {
+  // Because this function gets called on every page load,
+  // take extra care to optimize it away if logging is turned off.
+  if (logging::LOG_INFO < logging::GetMinLogLevel())
+    return;
+
+  DCHECK(state);
+  DCHECK(ds);
+  GURL url(ds->request().url());
+  Time start = state->start_load_time();
+  Time finish = state->finish_load_time();
+  // TODO(mbelshe): should we log more stats?
+  LOG(INFO) << "PLT: "
+            << (finish - start).InMilliseconds()
+            << "ms "
+            << url.spec();
+}
+
 void RenderView::focusAccessibilityObject(
     const WebAccessibilityObject& acc_obj) {
 #if defined(OS_WIN)
diff --git a/chrome/renderer/render_view.h b/chrome/renderer/render_view.h
index 790bfd5..fc59c19 100644
--- a/chrome/renderer/render_view.h
+++ b/chrome/renderer/render_view.h
@@ -83,6 +83,7 @@ struct FileUploadData;
 }
 
 namespace WebKit {
+class WebDataSource;
 class WebDragData;
 class WebMediaPlayer;
 class WebMediaPlayerClient;
@@ -716,6 +717,10 @@ class RenderView : public RenderWidget,
 
   void DumpLoadHistograms() const;
 
+  // Logs the navigation state to the console.
+  void LogNavigationState(const NavigationState* state,
+                          const WebKit::WebDataSource* ds) const;
+
   // Scan the given frame for password forms and send them up to the browser.
   void SendPasswordForms(WebKit::WebFrame* frame);