FCMify layout tests with scrollbar rendering diffs

Unfortunately in FCM, some scrollbars render imperceptibly different
when run through Mesa due to texture filtering issues.

To help make turning FCM on less painful, convert these tests to be FCM
early and rebaseline them.

BUG=361729

Review URL: https://codereview.chromium.org/249963002

git-svn-id: svn://svn.chromium.org/blink/trunk@172554 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove serialization version tags from crypto LayoutTests.

The LayoutTests in crypto/ are the only tests that dump objects'
complete serialization. This has the unfortunate side effect that any
change to the serialization format must update the -expected.txt files
in the crypto/ tests (due to the version number bump). The changes
currently add 224 lines to a diff, and cause unnecessary churn in the
crypto/ tests.

This change removes the version tag (first two bytes) from the dumped
output, removing the churn source discussed above.

Review URL: https://codereview.chromium.org/256483004

git-svn-id: svn://svn.chromium.org/blink/trunk@172555 bbb929c8-8fbe-4397-9dbb-9b2b20218538