GTK: Add TRACE_EVENTs around gtk ui events.

chrome/browser/ui/gtk/infobars/infobar_gtk.cc

 // Copyright (c) 2011 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 "chrome/browser/ui/gtk/infobars/infobar_gtk.h"
 
+#include "base/debug/trace_event.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/infobars/infobar_tab_helper.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
 #include "chrome/browser/ui/gtk/custom_button.h"
 #include "chrome/browser/ui/gtk/gtk_chrome_link_button.h"
 #include "chrome/browser/ui/gtk/gtk_theme_service.h"
 #include "chrome/browser/ui/gtk/gtk_util.h"
 #include "chrome/browser/ui/gtk/infobars/infobar_container_gtk.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
@@ skipping 188 matching lines @@
 void InfoBarGtk::OnCloseButton(GtkWidget* button) {
   // If we're not owned, we're already closing, so don't call
   // InfoBarDismissed(), since this can lead to us double-recording dismissals.
   if (delegate() && owned())
     delegate()->InfoBarDismissed();
   RemoveSelf();
 }
 
 gboolean InfoBarGtk::OnBackgroundExpose(GtkWidget* sender,
                                         GdkEventExpose* event) {
+  TRACE_EVENT0("ui::gtk", "InfoBarGtk::OnBackgroundExpose");
+
   GtkAllocation allocation;
   gtk_widget_get_allocation(sender, &allocation);
   const int height = allocation.height;
 
   cairo_t* cr = gdk_cairo_create(GDK_DRAWABLE(sender->window));
   gdk_cairo_rectangle(cr, &event->area);
   cairo_clip(cr);
 
   cairo_pattern_t* pattern = cairo_pattern_create_linear(0, 0, 0, height);
 
@@ skipping 59 matching lines @@
                          const content::NotificationSource& source,
                          const content::NotificationDetails& details) {
   UpdateBorderColor();
 }
 
 void InfoBarGtk::OnChildSizeRequest(GtkWidget* expanded,
                                     GtkWidget* child,
                                     GtkRequisition* requisition) {
   requisition->height = -1;
 }