[webkit-reviews] review requested: [Bug 70862] [MutationObservers] Support characterDataOldValue for characterData mutations : [Attachment 113105] More const String&ification

[bugzilla-daemon at webkit.org]

Adam Klein <adamk at chromium.org> has asked  for review:
Bug 70862: [MutationObservers] Support characterDataOldValue for characterData
mutations
https://bugs.webkit.org/show_bug.cgi?id=70862

Attachment 113105: More const String&ification
https://bugs.webkit.org/attachment.cgi?id=113105&action=review