Add one more suppression rule for tracked_objects.

This change adds another leak suppression for Bug 102327, which happens only on the Mac bots.

TBR=jar
BUG=102327
TEST=make the "Chromium Mac (valgrind)(1)" bot greener.
Review URL: http://codereview.chromium.org/8427027

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@108078 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/memcheck/suppressions_mac.txt

@@ -1943,7 +1943,7 @@
    fun:__NSFontInstanceInfoInitializeMetricsInfo
 }
 {
-   bug_102327
+   bug_102327_a
    Memcheck:Addr1
    fun:_ZNK15tracked_objects10ThreadData26OnThreadTerminationCleanupEv
    fun:_ZN15tracked_objects10ThreadData19OnThreadTerminationEPv
@@ -1951,3 +1951,10 @@
    fun:_pthread_exit
    fun:thread_start
 }
+{
+   bug_102327_b
+   Memcheck:Leak
+   fun:_Znw*
+   fun:_ZN15tracked_objects10ThreadData10InitializeEv
+   fun:_ZN15tracked_objects10ThreadData23InitializeThreadContextERKSs
+}