Always upload finch seed even if empty

R=renjietang@chromium.org

Change-Id: I22beaebb6c757818f8c28129d63ae48ba8bdad8e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2485345
Commit-Queue: David Schinazi <dschinazi@chromium.org>
Commit-Queue: Renjie Tang <renjietang@chromium.org>
Auto-Submit: David Schinazi <dschinazi@chromium.org>
Reviewed-by: Renjie Tang <renjietang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#818756}

components/network_session_configurator/browser/network_session_configurator.cc

@@ -501,6 +501,9 @@ quic::ParsedQuicVersionVector GetQuicVersions(
           base::debug::AllocateCrashKeyString(
               "OQV_finch_seed", base::debug::CrashKeySize::Size32);
       std::string finch_seed = variations::GetSeedVersion();
+      if (finch_seed.empty()) {
+        finch_seed = "OQV_empty";
+      }
       base::debug::ScopedCrashKeyString finch_scoped_key(finch_seed_key,
                                                          finch_seed);
       base::debug::DumpWithoutCrashing();