Re-enabled AppContainer support for Windows 10. This patch re-enables support for running under an AppContainer on Windows 10. It doesn't modify it to a default enabled state, but without this patch it isn't possible to enable at all on Windows 10 to test.
Re-enabled AppContainer support for Windows 10.
This patch re-enables support for running under an AppContainer on
Windows 10. It doesn't modify it to a default enabled state, but
without this patch it isn't possible to enable at all on Windows 10 to
test.

BUG=501975

Review URL: https://codereview.chromium.org/1410093007

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#357211}

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