Cherry-pick Skia infra fixes to m53 so that Windows and Android bots can run tests.

Cherry-pick Skia infra fixes to m53 so that Windows and Android bots can run tests.

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Convert SK Images to new assets format

Depends on https://codereview.chromium.org/2162563002/

BUG=skia:5427
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2155163002

Review-Url: https://codereview.chromium.org/2155163002

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Add Android SDK asset

This will allow us to use CIPD to install the Android SDK on bots.

BUG=skia:5427
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2086003002

Review-Url: https://codereview.chromium.org/2086003002

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Convert Win toolchain to CIPD package

BUG=skia:5427
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2111713003

Review-Url: https://codereview.chromium.org/2111713003

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NOTREECHECKS=true
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2159213002