Suppress a data race in speech tests...

tools/valgrind/tsan/suppressions.txt

 ############################
 # Chromium
 
 {
   bug_23433
   ThreadSanitizer:Race
   fun:*logging*SetMinLogLevel*
 }
 
 {
@@ skipping 21 matching lines @@
   ThreadSanitizer:Race
   fun:*media*PipelineImpl*InitializeTask*
 }
 
 {
   bug_46642b
   ThreadSanitizer:Race
   fun:*media*PipelineImpl*GetCurrentTime*
 }
 
+{
+  bug_53765
+  ThreadSanitizer:Race
+  fun:*scoped_ptr*SpeechInputBubble*
+}
+
 ############################
 # Real races in third_party
 {
   bug_23244 (libevent)
   ThreadSanitizer:Race
   fun:event_*
   fun:event_*
 }
 
 {
@@ skipping 252 matching lines @@
   ThreadSanitizer:Race
   ...
   fun:gethostbyname2_r*
 }
 
 {
   Benign race in nss (PR_EnterMonitor)
   ThreadSanitizer:Race
   fun:PR_EnterMonitor
 }