Refactoring: Move a part of creteMarkupInternal to StyledMarkupSerializer

Refactoring: Move a part of creteMarkupInternal to StyledMarkupSerializer

createMarkupInternal uses StyledMarkupSerializer as an accumulator of DOM
nodes and this is not a proper usage of the serializer. This patch moves
a part of createMarkupInternal to StyledMarkupSerializer::createMarkup
and hides some member functions of it. By this patch, it will be possible
to expose only member functions for serializing of StyledMarkupSerializer.

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

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=193922

[hajimehoshi, 2015-04-16 10:37:01]

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

[hajimehoshi, 2015-04-16 10:37:02]

PTAL

[tkent, 2015-04-16 23:13:12]

The CQ bit was checked by tkent@chromium.org

[tkent, 2015-04-16 23:13:13]

lgtm

[commit-bot: I haz the power, 2015-04-16 23:13:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1092573003/60001

[commit-bot: I haz the power, 2015-04-16 23:18:30]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-04-16 23:18:31]

Try jobs failed on following builders:
  mac_blink_rel on tryserver.blink (JOB_FAILED,
http://build.chromium.org/p/tryserver.blink/builders/mac_blink_rel/builds/52206)

[hajimehoshi, 2015-04-17 04:12:26]

Patchset #5 (id:80001) has been deleted

[hajimehoshi, 2015-04-17 04:12:59]

The CQ bit was checked by hajimehoshi@chromium.org

[hajimehoshi, 2015-04-17 04:13:00]

The patchset sent to the CQ was uploaded after l-g-t-m from tkent@chromium.org
Link to the patchset: https://codereview.chromium.org/1092573003/#ps100001
(title: "rebase")

[commit-bot: I haz the power, 2015-04-17 04:13:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1092573003/100001

[hajimehoshi, 2015-04-17 04:14:48]

The CQ bit was unchecked by hajimehoshi@chromium.org

[hajimehoshi, 2015-04-17 04:16:41]

The CQ bit was checked by hajimehoshi@chromium.org

[hajimehoshi, 2015-04-17 04:16:41]

The patchset sent to the CQ was uploaded after l-g-t-m from tkent@chromium.org
Link to the patchset: https://codereview.chromium.org/1092573003/#ps120001
(title: "nit")

[commit-bot: I haz the power, 2015-04-17 04:16:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1092573003/120001

[commit-bot: I haz the power, 2015-04-17 05:35:17]

Committed patchset #6 (id:120001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=193922