Convert animation and renderer code to know about BorderImageLength
This propagates BorderImageLengthBox further out in the code, but
actually converts it to an actual number or length as soon as possible
in the animation code, and animates it as the individual type.
Now we can also remove the compatibility conversion methods between
BorderImageLengthBox and LengthBox.
Also, update a couple of "Weird number of spaces at line-start"
indentations in CSSPropertyAnimation.cpp to not make the new code
inconsistent with the old wrt. indentation.
BUG=259107
Review URL: https://codereview.chromium.org/55813002
git-svn-id: svn://svn.chromium.org/blink/trunk@161715 bbb929c8-8fbe-4397-9dbb-9b2b20218538
8 files changed
