Setting `FLUTTER_GOMA_CREATE_XCODE_SYMLINKS=1` as an environment variable should
achieve the same result as manually specifying the `--xcode-symlinks` flag
(which I often forget). This is in keeping with the pattern of setting the
`GOMA_DIR` environment variable. The variable has a the `FLUTTER_` prefix
because environment variable with the `GOMA_` prefix are reserved for use by
Goma and variable unknown to Goma will cause a fatal error.

https://skia.googlesource.com/skia.git/+log/26a84431ff72..bde06cc511d2

2021-01-19 fmalita@chromium.org [svg] Cleanup: drop the presentation attribute SkPaint cache
2021-01-19 bungeman@google.com Avoid division by zero when shaping.
2021-01-19 bsalomon@google.com Revert "Test all YUVA image factories with different encoded origins."
2021-01-19 reed@google.com Add query to test our cached convexity
2021-01-19 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ANGLE from 68635b431b3c to 81430e11c81e (12 revisions)
2021-01-19 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from 149733cead63 to 8da0f82baf35 (2 revisions)
2021-01-19 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Chromium from 1d3066a6e2ec to 00da91bbde3d (227 revisions)
2021-01-19 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Dawn from 04772515a8b6 to e45593cb0876 (4 revisions)
2021-01-18 reed@google.com Remove legacy code from picture-shader
2021-01-18 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from aedd133cd85f to 149733cead63 (2 revisions)
2021-01-18 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ANGLE from 50c82f42e33f to 68635b431b3c (24 revisions)
2021-01-18 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Chromium from e330bc98d133 to 1d3066a6e2ec (498 revisions)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC scroggo@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/master/autoroll/README.md

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
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Please CC cbracken@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:
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Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

https://dart.googlesource.com/sdk.git/+log/091e9f17809e..c4214e6daaac

2021-01-18 dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com Version 2.12.0-240.0.dev
2021-01-18 dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com Version 2.12.0-239.0.dev
2021-01-18 dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com Version 2.12.0-238.0.dev

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dart-sdk-flutter-engine
Please CC dart-vm-team@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/master/autoroll/README.md

https://skia.googlesource.com/skia.git/+log/05e5446145a6..26a84431ff72

2021-01-18 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Dawn from 5a6fda1a6fcc to 04772515a8b6 (5 revisions)
2021-01-17 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update SKP version

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC scroggo@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/master/autoroll/README.md

https://dart.googlesource.com/sdk.git/+log/93a7e1189a8a..c962a50422d3

2021-01-16 dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com Version 2.12.0-234.0.dev
2021-01-16 dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com Version 2.12.0-233.0.dev

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
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Please CC dart-vm-team@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:
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Documentation for the AutoRoller is here:
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Revert "Roll buildroot to 92a8d2eb7aad592068f808e39b8330fd2bce25e3, Clang to 12.0.0 (#23698)" (#23734)

This reverts commit 98d3b474.

https://skia.googlesource.com/skia.git/+log/bfd330d08195..d414e600b24b

2021-01-15 fmalita@chromium.org [svg] Property inheritance workaround
2021-01-15 johnstiles@google.com Implement Type cloning for enums and structs.
2021-01-15 johnstiles@google.com Migrate Type-cloning logic from the Inliner into Type.
2021-01-15 johnstiles@google.com Revert "Disable the MSAA atlas mode for CCPR"
2021-01-15 brianosman@google.com Enable matrix-negation interpreter test

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC ethannicholas@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/master/autoroll/README.md