Regenerate text-autosizing mac baselines to fix image diff errors

Two tests have png expectations that consistently generate an error
message on mac:
fast/text-autosizing/tables/table-with-inline-block.html
fast/text-autosizing/supercluster-multiple-layout.html

The error message is:
Image diff returned an exit code of 2. See http://crbug.com/278596

The mac expectation files appear to actually be corrupt:
LayoutTests/platform/mac/fast/text-autosizing/supercluster-multiple-layout-expected.png
LayoutTests/platform/mac/fast/text-autosizing/tables/table-with-inline-block-expected.png

I generated these a long time ago and may have made a mistake. This
patch removes the files and marks them to generate new baselines.

BUG=374643

Review-Url: https://codereview.chromium.org/2046223002
Cr-Commit-Position: refs/heads/master@{#398475}
3 files changed