[webkit-reviews] review requested: [Bug 84009] Introduce an internal feature for a fixed placeholder : [Attachment 137282] Patch

[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 137282: Patch
https://bugs.webkit.org/attachment.cgi?id=137282&action=review