GTK: Add TRACE_EVENTs around gtk ui events.

chrome/browser/ui/gtk/location_bar_view_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/location_bar_view_gtk.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
+#include "base/debug/trace_event.h"
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/accessibility/accessibility_events.h"
 #include "chrome/browser/alternate_nav_url_fetcher.h"
 #include "chrome/browser/autocomplete/autocomplete_popup_model.h"
 #include "chrome/browser/command_updater.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
@@ skipping 1347 matching lines @@
       sender, this,
       ContentSettingBubbleModel::CreateContentSettingBubbleModel(
           parent_->browser(), tab_contents, profile,
           content_setting_image_model_->get_content_settings_type()),
       profile, tab_contents->tab_contents());
   return TRUE;
 }
 
 gboolean LocationBarViewGtk::ContentSettingImageViewGtk::OnExpose(
     GtkWidget* sender, GdkEventExpose* event) {
+  TRACE_EVENT0("ui::gtk",
+               "LocationBarViewGtk::ContentSettingImageViewGtk::OnExpose");
+
   if (!(animation_.IsShowing() || animation_.IsClosing()))
     return FALSE;
 
   const int height = sender->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 224 matching lines @@
       context_menu_->PopupForWidget(sender, event->button, event->time);
     }
   }
 
   return TRUE;
 }
 
 gboolean LocationBarViewGtk::PageActionViewGtk::OnExposeEvent(
     GtkWidget* widget,
     GdkEventExpose* event) {
+  TRACE_EVENT0("ui::gtk", "LocationBarViewGtk::PageActionViewGtk::OnExpose");
   TabContents* contents = owner_->GetTabContents();
   if (!contents)
     return FALSE;
 
   int tab_id = ExtensionTabUtil::GetTabId(contents);
   if (tab_id < 0)
     return FALSE;
 
   std::string badge_text = page_action_->GetBadgeText(tab_id);
   if (badge_text.empty())
     return FALSE;
 
   gfx::CanvasSkiaPaint canvas(event, false);
   gfx::Rect bounding_rect(widget->allocation);
   page_action_->PaintBadge(&canvas, bounding_rect, tab_id);
   return FALSE;
 }