Suppressed a data race in libjingle, re-grouped suppressions for third_party races

tools/valgrind/tsan/suppressions.txt

 ############################
 # Chromium
 
 {
   bug_21259
   ThreadSanitizer:Race
   ...
   fun:*tracked_objects*ThreadData*StartTracking*
 }
 
@@ skipping 12 matching lines @@
 }
 
 {
   bug_22520
   ThreadSanitizer:Race
   fun:*CancelableRequestBase*
   fun:*CancelableRequest*
 }
 
 {
-  bug_23244
-  ThreadSanitizer:Race
-  fun:event_*
-  fun:event_*
-}
-
-{
   bug_23245, bug_25385
   ThreadSanitizer:Race
   fun:*base*Thread*ThreadMain*
 }
 
 {
   bug_23423
   ThreadSanitizer:Race
   fun:*IPC*SyncMessageC*E*
 }
@@ skipping 12 matching lines @@
 
 {
   bug_24715
   ThreadSanitizer:Race
   fun:*base*internal*WeakReference*
   ...
   fun:*AppCacheUpdateJobTest*
 }
 
 {
-  bug_24724
-  ThreadSanitizer:Race
-  fun:*WTF*RefCountedBase*ref*
-  ...
-  fun:*WebCore*WorkerRunLoop*Task*
-}
-
-{
   bug_25385
   ThreadSanitizer:Race
   ...
   fun:*base*ThreadD*E*
 }
 
+############################
+# Real races in third_party
 {
-  bug_25645
+  bug_23244 (libevent)
+  ThreadSanitizer:Race
+  fun:event_*
+  fun:event_*
+}
+
+{
+  bug_24724 (WebKit)
+  ThreadSanitizer:Race
+  fun:*WTF*RefCountedBase*ref*
+  ...
+  fun:*WebCore*WorkerRunLoop*Task*
+}
+
+{
+  bug_25645 (WebKit)
   ThreadSanitizer:Race
   fun:*WTF*RefCountedBase*ref*
   ...
   fun:*WebCore*StringImpl*
 }
 
+{
+  bug_25913 (libjingle)
+  ThreadSanitizer:Race
+  fun:*talk_base*MessageQueue*Stop*
+}
+
 ############################
 # Data races in tests
 
 # TODO(timurrrr): bug item
 {
   Data race on bool in base/thread_unittest
   ThreadSanitizer:Race
   ...
   fun:*ToggleValue*Run*
 }
@@ skipping 117 matching lines @@
   fun:tzset*
 }
 
 # Benign race in thread-safe function
 {
   fun:mkstemp*
   ThreadSanitizer:Race
   ...
   fun:mkstemp*
 }