Restore skipping of virtual/scalefactor150/fast/hidpi/static/ webkit_tests

Three tests were no longer skipped as part of
https://codereview.chromium.org/1857083002 which caused them to start
failing on Linux and Windows debug builds again. I'm moving these back
to be skipped, awaiting further investigation.

BUG=593567
[email protected], [email protected]

Review URL: https://codereview.chromium.org/1880943003

Cr-Commit-Position: refs/heads/master@{#386664}
1 file changed