[Webkit-unassigned] [Bug 86175] New: HasCustomWillOrDidRecalcStyleFlag and family should live in a bit.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=86175

           Summary: HasCustomWillOrDidRecalcStyleFlag and family should
                    live in a bit.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: morrita at google.com
                CC: koivisto at iki.fi, rniwa at webkit.org, kling at webkit.org
            Blocks: 83269


Following flags are used to indicate that the node has some special callback functions.

- HasCustomWillOrDidRecalcStyleFlag
- HasCustomStyleForRendererFlag
- IsFrameOwnerElementFlag

We can replace them with a flag namely, say, HasCustomCallbacks.
And have optional virtual method to check which types of callbacks the node actually has.
Since majority of node doesn't have none of them and even single bit can work for early-out check.

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