Mark several color-profile-* layout tests as flaky.

The failure seems to occurs on Win10 only, but these tests already had entries and it was not possible to add a new Win10-specific entry.

TBR=ericrk@chromium.org
BUG=638843

Review-Url: https://codereview.chromium.org/2242173007
Cr-Commit-Position: refs/heads/master@{#412776}
1 file changed