[Webkit-unassigned] [Bug 192630] New: Don't attempt to animate invalid CSS properties

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=192630

            Bug ID: 192630
           Summary: Don't attempt to animate invalid CSS properties
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Animations
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: bfulgham at webkit.org
                CC: dino at apple.com

Inherited animation properties can cause child elements to think they need to animate CSS properties that they do not support, leading to nullptr crashes.

Instead, recognize that CSSPropertyInvalid is a potential requested animation property, and handle it cleanly (much like Animation::AnimateUnknownProperty is already handled).

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