Suppress a leak in BookmarkBarGtkUnittest.HidesHelpMessageWithBookmark (issue 164185)

tools/heapcheck/suppressions.txt

 # There are three kinds of suppressions in this file.
 # 1. third party stuff we have no control over
 #
 # 2. intentional unit test errors, or stuff that is somehow a false positive
 # in our own code, or stuff that is so trivial it's not worth fixing
 #
 # 3. Suppressions for real chromium bugs that are not yet fixed.
 # These should all be in chromium's bug tracking system (but a few aren't yet).
 # Periodically we should sweep this file and the bug tracker clean by
 # running overnight and removing outdated bugs/suppressions.
@@ skipping 1627 matching lines @@
    fun:chromeos::ibus::AppendIBusLookupTable
    fun:chromeos::ibus::IBusPanelServiceTest_UpdateLookupTableTest_Test::TestBody
 }
 {
    bug_163111_d
    Heapcheck:Leak
    ...
    fun:dbus::Response::FromMethodCall
    fun:chromeos::ibus::IBusPanelServiceImpl::UpdateProperty
 }
+{
+   bug_164185
+   Heapcheck:Leak
+   ...
+   fun:BookmarkBarGtk::GetFirstHiddenBookmark
+   fun:BookmarkBarGtk::SetChevronState
+   fun:BookmarkBarGtk::BookmarkNodeAdded
+   fun:BookmarkModel::AddNode
+   fun:BookmarkModel::AddURLWithCreationTime
+   fun:BookmarkModel::AddURL
+   fun:BookmarkBarGtkUnittest_HidesHelpMessageWithBookmark_Test::TestBody
+}
+