Fix a typo and a style nit in some of TSan suppressions

tools/valgrind/tsan/suppressions.txt

 # There are a few 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 # running overnight and removing outdated bugs/suppressions.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 792 matching lines @@
   fun:std::swap
   fun:RenderThreadImpl::Send
   fun:RenderWidget::Send
   fun:RenderViewImpl::Send
   fun:RenderWidget::DoDeferredUpdate
   fun:RenderWidget::DoDeferredUpdateAndSendInputAck
   fun:RenderWidget::InvalidationCallback
   fun:base::internal::RunnableAdapter::Run
 }
 {
-  bug_131771
+  bug_113771_a
   ThreadSanitizer:Race
   fun:tracked_objects::ThreadData::TrackingStatus
   fun:tracked_objects::ThreadData::TallyABirthIfActive
   fun:base::TrackingInfo::TrackingInfo
   fun:base::PendingTask::PendingTask
-  ...
 }
 {
-  bug_131771_a
+  bug_113771_b
   ThreadSanitizer:Race
   fun:tracked_objects::ThreadData::TrackingStatus
   fun:tracked_objects::ThreadData::Now
   fun:tracked_objects::ThreadData::NowForEndOfRun
   fun:MessageLoop::RunTask
 }
 {
-  bug_131771_b
+  bug_113771_c
   ThreadSanitizer:Race
   fun:tracked_objects::ThreadData::TrackingStatus
   fun:tracked_objects::ThreadData::Now
   fun:tracked_objects::ThreadData::NowForStartOfRun
   fun:MessageLoop::RunTask
 }
 {
   bug_115540
   ThreadSanitizer:Race
   fun:base::Thread::message_loop
@@ skipping 30 matching lines @@
 }
 {
   bug_118345
   ThreadSanitizer:Race
   fun:base::Thread::message_loop
   fun:content::BrowserThreadImpl::PostTaskHelper
   fun:content::BrowserThread::PostTask
   fun:PluginLoaderPosix::GetPluginsToLoad
   fun:base::internal::RunnableAdapter::Run
 }