GTK: Add TRACE_EVENTs around gtk ui events.

chrome/browser/ui/gtk/bookmarks/bookmark_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/bookmarks/bookmark_bar_gtk.h"
 
 #include <vector>
 
 #include "base/bind.h"
+#include "base/debug/trace_event.h"
 #include "base/metrics/histogram.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/bookmarks/bookmark_node_data.h"
 #include "chrome/browser/bookmarks/bookmark_utils.h"
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/ntp_background_util.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 253 matching lines @@
   model_->AddObserver(this);
   if (model_->IsLoaded())
     Loaded(model_, false);
   // else case: we'll receive notification back from the BookmarkModel when done
   // loading, then we'll populate the bar.
 }
 
 void BookmarkBarGtk::SetBookmarkBarState(
     BookmarkBar::State state,
     BookmarkBar::AnimateChangeType animate_type) {
+  TRACE_EVENT0("ui::gtk", "BookmarkBarGtk::SetBookmarkBarState");
   if (animate_type == BookmarkBar::ANIMATE_STATE_CHANGE &&
       (state == BookmarkBar::DETACHED ||
        bookmark_bar_state_ == BookmarkBar::DETACHED)) {
     // TODO(estade): animate the transition between detached and non or remove
     // detached entirely.
     animate_type = BookmarkBar::DONT_ANIMATE_STATE_CHANGE;
   }
   BookmarkBar::State old_state = bookmark_bar_state_;
   bookmark_bar_state_ = state;
   if (state == BookmarkBar::SHOW || state == BookmarkBar::DETACHED)
@@ skipping 1066 matching lines @@
     return TRUE;
   }
 
   // Remove previous highlighting.
   gtk_drag_unhighlight(button);
   return ItemDraggedOverToolbar(context, index, time);
 }
 
 gboolean BookmarkBarGtk::OnEventBoxExpose(GtkWidget* widget,
                                           GdkEventExpose* event) {
+  TRACE_EVENT0("ui::gtk", "BookmarkBarGtk::OnEventBoxExpose");
   GtkThemeService* theme_provider = theme_service_;
 
   // We don't need to render the toolbar image in GTK mode, except when
   // detached.
   if (theme_provider->UsingNativeTheme() &&
       bookmark_bar_state_ != BookmarkBar::DETACHED)
     return FALSE;
 
   if (bookmark_bar_state_ != BookmarkBar::DETACHED) {
     cairo_t* cr = gdk_cairo_create(GDK_DRAWABLE(widget->window));
@@ skipping 56 matching lines @@
 void BookmarkBarGtk::OnEditBookmarksEnabledChanged() {
   GtkDestDefaults dest_defaults =
       *edit_bookmarks_enabled_ ? GTK_DEST_DEFAULT_ALL :
                                  GTK_DEST_DEFAULT_DROP;
   gtk_drag_dest_set(overflow_button_, dest_defaults, NULL, 0, kDragAction);
   gtk_drag_dest_set(other_bookmarks_button_, dest_defaults,
                     NULL, 0, kDragAction);
   ui::SetDestTargetList(overflow_button_, kDestTargetList);
   ui::SetDestTargetList(other_bookmarks_button_, kDestTargetList);
 }