Bump shards 9->27 for webview tests on nougat

This suite uses 4 core emulators, which has plenty of room atm. Bumping to 36 should bring this suite down to 15 min, but wanted to start with 27 and make sure that it doesn't use too much. Estimated to need ~85
bots to account for extra overhead.

If all looks fine, we can bump to 36.

Bug: 1379102
Change-Id: I56b6cbe6b601bcf1a57907ec39e275245d4098cb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3995278
Commit-Queue: Stephanie Kim <[email protected]>
Reviewed-by: Erik Staab <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1066206}
diff --git a/testing/buildbot/test_suite_exceptions.pyl b/testing/buildbot/test_suite_exceptions.pyl
index d694c47..e16e4d97 100644
--- a/testing/buildbot/test_suite_exceptions.pyl
+++ b/testing/buildbot/test_suite_exceptions.pyl
@@ -3949,7 +3949,7 @@
       },
       'android-nougat-x86-rel': {
         'swarming': {
-          'shards': 9,
+          'shards': 27,
         },
       },
       'android-pie-arm64-rel': {