Analyzed the problem and tested 30+ times the affected and related tests without problems. Test f...

chrome/browser/ui/gtk/status_icons/status_icon_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/status_icons/status_icon_gtk.h"
 
 #include "base/string16.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/ui/gtk/menu_gtk.h"
 #include "third_party/skia/include/core/SkBitmap.h"
@@ skipping 27 matching lines @@
   // pressed status icons.
 }
 
 void StatusIconGtk::SetToolTip(const string16& tool_tip) {
   gtk_status_icon_set_tooltip(icon_, UTF16ToUTF8(tool_tip).c_str());
 }
 
 void StatusIconGtk::DisplayBalloon(const SkBitmap& icon,
                                    const string16& title,
                                    const string16& contents) {
-  // TODO(atwilson): Figure out the right thing to do here.
-  // http://crbug.com/74970
+  notification_.DisplayBalloon(icon, title, contents);
 }
 
 void StatusIconGtk::OnClick(GtkWidget* widget) {
   DispatchClickEvent();
 }
 
 void StatusIconGtk::UpdatePlatformContextMenu(ui::MenuModel* model) {
   if (!model)
     menu_.reset();
   else
     menu_.reset(new MenuGtk(NULL, model));
 }
 
 void StatusIconGtk::OnPopupMenu(GtkWidget* widget, guint button, guint time) {
   // If we have a menu - display it.
   if (menu_.get())
     menu_->PopupAsContextForStatusIcon(time, button, icon_);
 }