Reland "[co19] Roll co19 to ae818220b12ec9c2470519db2c7167cbe4745e12"
Reland "[co19] Roll co19 to ae818220b12ec9c2470519db2c7167cbe4745e12"

This reverts commit 88ee3334087b6a66d9f258c8fd9e014846266bc7.

Reason for revert: Hook added by mistake removed.

Original change's description:
> Revert "[co19] Roll co19 to ae818220b12ec9c2470519db2c7167cbe4745e12"
>
> This reverts commit 03e8ddd13c26eeb0c162c47ee76cfc239c43bdd6.
>
> Reason for revert: Change to hooks does not work with Windows.
>
> Original change's description:
> > [co19] Roll co19 to ae818220b12ec9c2470519db2c7167cbe4745e12
> >
> > 2021-03-22 sgrekhov@unipro.ru Fixes #1032. Change place where analyzer expects COMPILE_TIME_ERROR.UNCHECKED_USE_OF_NULLABLE_VALUE
> > 2021-03-22 sgrekhov@unipro.ru Fixes #1027. Typo fixed
> > 2021-03-22 sgrekhov@unipro.ru Fixes #1026. Missed experimental flag added
> > 2021-03-22 sgrekhov@unipro.ru Fixes SDK issue #45381. Use 32-bit int boundaries for 32-bit systems
> > 2021-03-19 sgrekhov@unipro.ru #1024. Tests that plays with the integers not representable in JS moved to separate files. These files will be skipped on JS
> >
> > Cq-Include-Trybots: dart/try:analyzer-nnbd-linux-release-try,dart2js-nnbd-linux-x64-chrome-try,ddc-nnbd-linux-release-chrome-try,front-end-nnbd-linux-release-x64-try,vm-kernel-nnbd-linux-debug-x64-try,vm-kernel-nnbd-linux-release-simarm64-try,vm-kernel-nnbd-linux-release-x64-try,vm-kernel-nnbd-mac-release-x64-try,vm-kernel-nnbd-win-release-x64-try,vm-kernel-precomp-nnbd-linux-debug-x64-try,vm-kernel-precomp-nnbd-linux-release-simarm64-try,vm-kernel-precomp-nnbd-linux-release-x64-try
> > Change-Id: Idc63625a841f1f90b0cce5db9ca6add13e4d1192
> > Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/192303
> > Reviewed-by: William Hesse <a821cddceae7dc400f272e3cb1a72f400f9fed6d@google.com>
> > Commit-Queue: Alexander Thomas <29642742b6693024c89de8232f2e2542cf7eedf7@google.com>
>
> TBR=a821cddceae7dc400f272e3cb1a72f400f9fed6d@google.com,29642742b6693024c89de8232f2e2542cf7eedf7@google.com
>
> Change-Id: I5f66db541034377f5d68424073282080d13fd34b
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Cq-Include-Trybots: dart/try:analyzer-nnbd-linux-release-try
> Cq-Include-Trybots: dart2js-nnbd-linux-x64-chrome-try
> Cq-Include-Trybots: ddc-nnbd-linux-release-chrome-try
> Cq-Include-Trybots: front-end-nnbd-linux-release-x64-try
> Cq-Include-Trybots: vm-kernel-nnbd-linux-debug-x64-try
> Cq-Include-Trybots: vm-kernel-nnbd-linux-release-simarm64-try
> Cq-Include-Trybots: vm-kernel-nnbd-linux-release-x64-try
> Cq-Include-Trybots: vm-kernel-nnbd-mac-release-x64-try
> Cq-Include-Trybots: vm-kernel-nnbd-win-release-x64-try
> Cq-Include-Trybots: vm-kernel-precomp-nnbd-linux-debug-x64-try
> Cq-Include-Trybots: vm-kernel-precomp-nnbd-linux-release-simarm64-try
> Cq-Include-Trybots: vm-kernel-precomp-nnbd-linux-release-x64-try
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/192380
> Reviewed-by: William Hesse <a821cddceae7dc400f272e3cb1a72f400f9fed6d@google.com>

# Not skipping CQ checks because this is a reland.

Change-Id: Ie54fde2d92d1b2cdb3b70835f1f8c17e3c5ac477
Cq-Include-Trybots: dart/try:analyzer-nnbd-linux-release-try,dart2js-nnbd-linux-x64-chrome-try,ddc-nnbd-linux-release-chrome-try,front-end-nnbd-linux-release-x64-try,vm-kernel-nnbd-linux-debug-x64-try,vm-kernel-nnbd-linux-release-simarm64-try,vm-kernel-nnbd-linux-release-x64-try,vm-kernel-nnbd-mac-release-x64-try,vm-kernel-nnbd-win-release-x64-try,vm-kernel-precomp-nnbd-linux-debug-x64-try,vm-kernel-precomp-nnbd-linux-release-simarm64-try,vm-kernel-precomp-nnbd-linux-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/192384
Reviewed-by: Alexander Thomas <29642742b6693024c89de8232f2e2542cf7eedf7@google.com>
Reviewed-by: William Hesse <a821cddceae7dc400f272e3cb1a72f400f9fed6d@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk