GTK: Add TRACE_EVENTs around gtk ui events.

chrome/browser/ui/gtk/find_bar_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/find_bar_gtk.h"
 
 #include <gdk/gdkkeysyms.h>
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
+#include "base/debug/trace_event.h"
 #include "base/i18n/rtl.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
 #include "chrome/browser/ui/find_bar/find_bar_state.h"
 #include "chrome/browser/ui/find_bar/find_notification_details.h"
 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
@@ skipping 780 matching lines @@
     FindEntryTextInContents(button == find_next_button_->widget());
   } else {
     NOTREACHED();
   }
 }
 
 // static
 gboolean FindBarGtk::OnContentEventBoxExpose(GtkWidget* widget,
                                              GdkEventExpose* event,
                                              FindBarGtk* bar) {
+  TRACE_EVENT0("ui::gtk", "FindBarGtk::OnContentEventBoxExpose");
   if (bar->theme_service_->UsingNativeTheme()) {
     // Draw the text entry background around where we input stuff. Note the
     // decrement to |width|. We do this because some theme engines
     // (*cough*Clearlooks*cough*) don't do any blending and use thickness to
     // make sure that widgets never overlap.
     int padding = gtk_widget_get_style(widget)->xthickness;
     GdkRectangle rec;
     gtk_widget_get_allocation(widget, &rec);
     rec.width -= padding;
 
     gtk_util::DrawTextEntryBackground(bar->text_entry_, widget,
                                       &event->area, &rec);
   }
 
   return FALSE;
 }
 
 // Used to handle custom painting of |container_|.
 gboolean FindBarGtk::OnExpose(GtkWidget* widget, GdkEventExpose* e,
                               FindBarGtk* bar) {
+  TRACE_EVENT0("ui::gtk", "FindBarGtk::OnExpose");
+
   GtkAllocation allocation;
   gtk_widget_get_allocation(widget, &allocation);
 
   if (bar->theme_service_->UsingNativeTheme()) {
     if (bar->container_width_ != allocation.width ||
         bar->container_height_ != allocation.height) {
       std::vector<GdkPoint> mask_points = MakeFramePolygonPoints(
           allocation.width, allocation.height, FRAME_MASK);
       GdkRegion* mask_region = gdk_region_polygon(&mask_points[0],
                                                   mask_points.size(),
@@ skipping 132 matching lines @@
   return FALSE;  // Continue propagation.
 }
 
 gboolean FindBarGtk::OnFocusOut(GtkWidget* entry, GdkEventFocus* event) {
   g_signal_handlers_disconnect_by_func(
       gdk_keymap_get_for_display(gtk_widget_get_display(entry)),
       reinterpret_cast<gpointer>(&OnKeymapDirectionChanged), this);
 
   return FALSE;  // Continue propagation.
 }