Refactoring: Change some functions in MarkupFormatter static

Refactoring: Change some functions in MarkupFormatter static

Some of those functions in MarkupFormatter don't use the member
variables so we can change them to be static. This CL does that.

Now MarkupAccumulator and MarkupFormatter have samely named functions
and most of those in MarkupAccumulator are implemented just with calling
counterparts in MarkupFormatter. This CL also removes those redundant
delegations.

BUG=n/a
TEST=n/a; no behavior change

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=196459

[hajimehoshi, 2015-06-04 04:20:14]

hajimehoshi@chromium.org changed reviewers:
+ tkent@chromium.org, yosin@chromium.org

[hajimehoshi, 2015-06-04 04:20:16]

PTAL

[tkent, 2015-06-04 04:23:22]

The CQ bit was checked by tkent@chromium.org

[tkent, 2015-06-04 04:23:23]

lgtm

[commit-bot: I haz the power, 2015-06-04 04:23:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1162113004/1

[commit-bot: I haz the power, 2015-06-04 05:28:16]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=196459