[Webkit-unassigned] [Bug 236740] New: Always use ChildChange::Source::Parser when creating input element UA shadow tree contents

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Feb 16 15:41:48 PST 2022


https://bugs.webkit.org/show_bug.cgi?id=236740

            Bug ID: 236740
           Summary: Always use ChildChange::Source::Parser when creating
                    input element UA shadow tree contents
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Forms
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: heycam at apple.com
                CC: cdumez at apple.com, wenson_hsieh at apple.com

When creating an input element's UA shadow tree, we currently use a ChildChange::Source value that depends on whether the input element itself was parser- or script-inserted.  But since UA shadow trees are not exposed to content, and we don't have any dependency on the extra work that inserting using ChildChange::Source::API does, we can use ChildChange::Source::Parser unconditionally.

Local testing showed this scored a 0.1% Speedometer 2 improvement.

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