GTK: Fix a couple minor popup window icon menu bugs.

BUG=26265,26268

Review URL: http://codereview.chromium.org/360023

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@31009 0039d316-1c4b-4281-b951-d872f2087c98
MenuGtk::~MenuGtk() {
  menu_.Destroy();
  STLDeleteContainerPointers(submenus_we_own_.begin(), submenus_we_own_.end());
  if (dummy_accel_group_)
    g_object_unref(dummy_accel_group_);
}

MenuGtk::~MenuGtk() {
  menu_.Destroy();
  STLDeleteContainerPointers(submenus_we_own_.begin(), submenus_we_own_.end());
  if (dummy_accel_group_)
    g_object_unref(dummy_accel_group_);
}
