[css-align] Adapt the place-content shorthand to the new baseline syntax
Now that the align-content and justify-content CSS properties are
adapted to the new baseline-position CSS values syntax we can adapt the
shorthand that controls such properties to the new syntax as well.
In addition, this patch makes public some of the utility functions
defined in the CSSPropertiesAlignmentUtils class, so that they can be
shared between the different parsing and computed style logic of the
different alignment related CSS properties.
BUG=703584
Review-Url: https://codereview.chromium.org/2762623002
Cr-Commit-Position: refs/heads/master@{#460630}
3 files changed
