Makoto Kato 4f19afdf88 Bug 1318570 - Clean up GetTextNode into TextEditRules. r=masayuki
EditorBase parameter of GetTextNode is unnecessary because it uses static method only.  Also, we should return nsINode to reduce QI.

MozReview-Commit-ID: 3KazYFcr899

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extra : rebase_source : 092bbcc84d7c1e7174029bb90f606f3953fe8597
2016-11-22 20:56:03 +09:00
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