Add an explicit function to init NSS for SSL server sockets

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 # running overnight and removing outdated bugs/suppressions.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 931 matching lines @@
   bug_131001
   ThreadSanitizer:Race
   ...
   fun:media::AudioOutputMixer::StopStream
   fun:media::AudioOutputProxy::Stop
   fun:media::AudioOutputController::DoStopCloseAndClearStream
   fun:media::AudioOutputController::DoClose
   fun:base::internal::RunnableAdapter::Run
 }
 {
-   bug_131622a
-   ThreadSanitizer:Race
-   fun:ssl_InitSessionCacheLocks
-   fun:lock_cache
-   fun:ssl_LookupSID
-   fun:ssl2_BeginClientHandshake
-   fun:ssl_Do1stHandshake
-   fun:SSL_ForceHandshake
-   fun:net::SSLClientSocketNSS::Core::DoHandshake
-   fun:net::SSLClientSocketNSS::Core::DoHandshakeLoop
-   fun:net::SSLClientSocketNSS::Core::Connect
-   fun:base::internal::RunnableAdapter::Run
-}
-{
-   bug_131622b
-   ThreadSanitizer:Race
-   fun:lock_cache
-   fun:ssl_LookupSID
-   fun:ssl2_BeginClientHandshake
-   fun:ssl_Do1stHandshake
-   fun:SSL_ForceHandshake
-   fun:net::SSLClientSocketNSS::Core::DoHandshake
-   fun:net::SSLClientSocketNSS::Core::DoHandshakeLoop
-   fun:net::SSLClientSocketNSS::Core::Connect
-   fun:base::internal::RunnableAdapter::Run
-}
-{
    bug_132230a
    ThreadSanitizer:Race
    ...
    fun:ProtocolHandlerRegistry::DefaultClientObserver::~DefaultClientObserver
    fun:::FakeClientObserver::~FakeClientObserver
    fun:ProtocolHandlerRegistry::Finalize
 }
 {
    bug_132230b
    ThreadSanitizer:Race
    fun:ShellIntegration::DefaultWebClientWorker::ExecuteSetAsDefault
    fun:base::internal::RunnableAdapter::Run
 }