[Webkit-unassigned] [Bug 99649] New: [BlackBerry] Cache TouchDown HitTestResult to avoid calling RenderLayer::hitTest unnecessarily

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=99649

           Summary: [BlackBerry] Cache TouchDown HitTestResult to avoid
                    calling RenderLayer::hitTest unnecessarily
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Other
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: WebKit BlackBerry
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mlattanzio at rim.com


RenderLayer::hitTest() can be expensive. 

We can merge together some of the calls by caching the result. This speeds up the hot path in our touch scrolling code.

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