Suppress races on randomnessPid in sqlite (issue 459429)

BUG=459429
TBR=jyasskin@chromium.org

Review URL: https://codereview.chromium.org/941683003

Cr-Original-Commit-Position: refs/heads/master@{#317044}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 5971c87325a442f284eaedbd21a59bec155b7230

sanitizers/tsan_suppressions.cc

@@ -325,6 +325,9 @@ char kTSanDefaultSuppressions[] =
 // https://crbug.com/455665
 "race:mojo::common::*::tick_clock\n"
 
+// https://crbug.com/459429
+"race:randomnessPid\n"
+
 // End of suppressions.
 ;  // Please keep this semicolon.