Revert 54168 - Remove PulseAudio 48553 suppression

tools/valgrind/memcheck/suppressions.txt

Index: tools/valgrind/memcheck/suppressions.txt
diff --git a/tools/valgrind/memcheck/suppressions.txt b/tools/valgrind/memcheck/suppressions.txt
index 95bbe315b38a2839635d772d283757d0fd12429c..32557f7887f9910901a542e6e70426c5a532d9e1 100644
--- a/tools/valgrind/memcheck/suppressions.txt
+++ b/tools/valgrind/memcheck/suppressions.txt
@@ -3439,6 +3439,25 @@
    fun:_ZN9OptionsUIC1EP11TabContents
 }
 {
+  bug_48553
+  Memcheck:Leak
+  fun:malloc
+  fun:malloc
+  fun:pa_xmalloc
+  obj:/usr/lib/libpulse.so.0.4.1
+  ...
+  fun:_ZN8chromeos15PulseAudioMixer14PulseAudioInitEv
+  fun:_ZN8chromeos15PulseAudioMixer6DoInitEP14CallbackRunnerI6Tuple1IbEE
+  fun:_Z16DispatchToMethodIN8chromeos15PulseAudioMixerEMS1_FvP14CallbackRunnerI6Tuple1IbEEES6_EvPT_T0_RKS3_IT1_E
+  fun:_ZN14RunnableMethodIN8chromeos15PulseAudioMixerEMS1_FvP14CallbackRunnerI6Tuple1IbEEES3_IS6_EE3RunEv
+  fun:_ZN11MessageLoop7RunTaskEP4Task
+  fun:_ZN11MessageLoop21DeferOrRunPendingTaskERKNS_11PendingTaskE
+  fun:_ZN11MessageLoop6DoWorkEv
+  fun:_ZN4base18MessagePumpDefault3RunEPNS_11MessagePump8DelegateE
+  fun:_ZN11MessageLoop11RunInternalEv
+  fun:_ZN11MessageLoop10RunHandlerEv
+}
+{
    bug_48557_1
    Memcheck:Leak
    fun:_Znw*