Roll src-internal from 6eae9bf238ce to 646a59e1f51f (2 revisions)

https://chrome-internal.googlesource.com/chrome/src-internal.git/+log/6eae9bf238ce..646a59e1f51f

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 fdoray@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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

Cq-Include-Trybots: luci.chrome.try:linux-chromeos-chrome
Bug: chromium:1247705,chromium:1254650
Tbr: fdoray@google.com
Change-Id: Ia06afab479010bd45479db2af52a87b5025ebfae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3219327
Commit-Queue: chromium-internal-autoroll <chromium-internal-autoroll@skia-corp.google.com.iam.gserviceaccount.com>
Bot-Commit: chromium-internal-autoroll <chromium-internal-autoroll@skia-corp.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#930713}

DEPS

@@ -1695,7 +1695,7 @@ deps = {
     Var('chromium_git') + '/v8/v8.git' + '@' +  Var('v8_revision'),
 
   'src-internal': {
-    'url': 'https://chrome-internal.googlesource.com/chrome/src-internal.git@6eae9bf238ce787d3c8d27c22742cabb894d79e1',
+    'url': 'https://chrome-internal.googlesource.com/chrome/src-internal.git@646a59e1f51fa8237c7104a6c7805d3d7581d021',
     'condition': 'checkout_src_internal',
   },