Drop LayoutVTTCue::adjustForTopAndBottomMarginBorderAndPadding

Drop LayoutVTTCue::adjustForTopAndBottomMarginBorderAndPadding

This method only serves to break the cue layout computed by
SnapToLinesLayouter. If we want to factor in margin+border for cues (and
padding for the cue container), then factor that into the cue layout
algorithm instead.

BUG=301580
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201119

[fs, 2015-08-24 13:09:37]

fs@opera.com changed reviewers:
+ philipj@opera.com

[fs, 2015-08-24 13:09:37]

My recollection says that we discussed (the usefulness of) this method at some
point (authoring date of original commit says end of January this year), and
decided to do away with it. The description dates back to that time period and
seems to suggest that at least...

[philipj_slow, 2015-08-25 10:06:52]

The CQ bit was checked by philipj@opera.com

[philipj_slow, 2015-08-25 10:06:52]

lgtm

[commit-bot: I haz the power, 2015-08-25 10:07:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1314613002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1314613002/20001

[commit-bot: I haz the power, 2015-08-25 10:11:17]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=201119