Rename childNodeCount() / childNode() methods for clarity

Rename childNodeCount() / childNode() methods for clarity

Rename childNodeCount() / childNode() methods for clarity and to avoid bad
uses. They are now called countChildren() / traverseToChildAt() to make it
clear that these are doing work and are now simpler getters.

Also rename hasChildNodes() to hasChildren() for consistency.

R=eseidel, adamk

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=167616

[Inactive, 2014-02-20 01:41:28]

Let me know if you have better suggestions for the naming :)

[Inactive, 2014-02-21 19:17:00]

Eric, any feedback? This is a follow-up based on your renaming proposal on my
earlier CL.

[eseidel, 2014-02-21 21:18:38]

lgtm

[commit-bot: I haz the power, 2014-02-21 21:18:56]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ch.dumez@samsung.com/171773008/40001

[commit-bot: I haz the power, 2014-02-21 23:18:05]

Change committed as 167616