Revert of Remove SkFontConfigInterface race suppression. (patchset #1 id:1 of...

Revert of Remove SkFontConfigInterface race suppression. (patchset #1 id:1 of https://codereview.chromium.org/1467313002/ )

Reason for revert:
The data race is still reproducible (see the bug)

BUG=chromium:369257

Original issue's description:
> Remove SkFontConfigInterface race suppression.
>
> The race was fixed with https://codereview.chromium.org/355573006 ,
> committed as
> https://skia.googlesource.com/skia/+/e438ddbc7451ec80f953266409fea4695e78c8c2
>
> This is effectively a revert of https://codereview.chromium.org/273523002 .
>
> BUG=chromium:369257
>
> Committed: https://crrev.com/a8c01b568251a5dc191e4fb67ab5c1dc6b8af86e
> Cr-Commit-Position: refs/heads/master@{#361125}

TBR=mtklein@chromium.org,bungeman@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:369257

Review URL: https://codereview.chromium.org/1468173005

Cr-Commit-Position: refs/heads/master@{#361323}

build/sanitizers/tsan_suppressions.cc

@@ -239,6 +239,13 @@ char kTSanDefaultSuppressions[] =
 // https://code.google.com/p/v8/issues/detail?id=3143
 "race:v8::internal::FLAG_track_double_fields\n"
 
+// https://crbug.com/369257
+// TODO(mtklein): annotate properly and remove suppressions.
+"race:SandboxIPCHandler::HandleFontMatchRequest\n"
+"race:SkFontConfigInterfaceDirect::matchFamilyName\n"
+"race:SkFontConfigInterface::GetSingletonDirectInterface\n"
+"race:FcStrStaticName\n"
+
 // http://crbug.com/374135
 "race:media::AlsaWrapper::PcmWritei\n"