Revert 113169 - Ignore the correct synchronization in __sfp on Mac that isn't handled

tools/valgrind/tsan/suppressions_mac.txt

 # There are two 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 # running overnight and removing outdated bugs/suppressions.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 201 matching lines @@
   fun:MIO::DAL::System::TeardownShell
   fun:MIO::DAL::System::AtExitHandler
   fun:MIO::DAL::AtExit::AtExitHandler
 }
 {
   bug_100772d
   ThreadSanitizer:Race
   fun:DVSignalSync
   fun:DVDeviceTerminate
 }
+{
+  bug_106197
+  ThreadSanitizer:Race
+  ...
+  fun:__sfp
+  fun:fopen
+  fun:file_util::OpenFile
+  fun:base::SharedMemory::Create
+  fun:base::SharedMemory::CreateNamed
+  fun:base::::MultipleThreadMain::ThreadMain
+  fun:base::::ThreadFunc
+}