[webkit-reviews] review requested: [Bug 84009] Introduce an internal feature for a fixed placeholder : [Attachment 137303] Patch 3

[bugzilla-daemon at webkit.org]

Kent Tamura <tkent at chromium.org> has asked  for review:
Bug 84009: Introduce an internal feature for a fixed placeholder
https://bugs.webkit.org/show_bug.cgi?id=84009

Attachment 137303: Patch 3
https://bugs.webkit.org/attachment.cgi?id=137303&action=review