Retain is_current_color information in BorderValue constructor
This CL fixes the BorderValue constructor to retain the is_current_color
information which it was losing due to us resolving the StyleColor to
Color but still using it as a StyleColor. This meant we didn't have
the is_current_color information.
This fixes a bug in the code where we are losing information when
constructing BorderValue.
A unit test is also added to the effect.
BUG=628043
Review-Url: https://codereview.chromium.org/2913663002
Cr-Commit-Position: refs/heads/master@{#475433}
2 files changed
