Roll src-internal from a0cf0214eefa to 6821f818e6f5 (7 revisions)

https://chrome-internal.googlesource.com/chrome/src-internal.git/+log/a0cf0214eefa..6821f818e6f5

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://skia-autoroll.corp.goog/r/src-internal-chromium-autoroll
Please CC xhwang@google.com,nektar@google.com on the revert to ensure that a human
is aware of the problem.

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https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Cq-Include-Trybots: luci.chrome.try:linux-chromeos-chrome
Bug: chromium:1115220,chromium:1116650,chromium:1117663
Tbr: xhwang@google.com,nektar@google.com
Change-Id: I51bc0b4d22b336ccc222ea8b8b410ce190618cfd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2369553Reviewed-by: chromium-internal-autoroll <chromium-internal-autoroll@skia-corp.google.com.iam.gserviceaccount.com>
Commit-Queue: chromium-internal-autoroll <chromium-internal-autoroll@skia-corp.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#800741}

DEPS

@@ -1542,7 +1542,7 @@ deps = {
     Var('chromium_git') + '/v8/v8.git' + '@' +  Var('v8_revision'),
 
   'src-internal': {
-    'url': 'https://chrome-internal.googlesource.com/chrome/src-internal.git@a0cf0214eefa6e7a0ac143ffa597b032cb64b454',
+    'url': 'https://chrome-internal.googlesource.com/chrome/src-internal.git@6821f818e6f5b98966e0f038a33d2ca6b809da28',
     'condition': 'checkout_src_internal',
   },