[Webkit-unassigned] [Bug 133667] New: Don't snapshot offscreen plugins that would normally be considered primary plugins after they are moved in view

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=133667

           Summary: Don't snapshot offscreen plugins that would normally
                    be considered primary plugins after they are moved in
                    view
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: Plug-ins
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: roger_fong at apple.com
                CC: dino at apple.com, jonlee at apple.com, roger_fong at apple.com


We've run into an issue where some sites (namely youtube) start their plugins offscreen and then move them into view after clicking a video link.
The issue is that by the time the user clicks the video the offscreen plugin has already been snapshotted.
We should make sure to not snapshot said plugin if 
The plugin is the right size to be a primary plugin ADN
1) The maximum number of snapshot retries has been reached and no good snapshot has yet been found
OR
2) The plugin is still trying to snapshot properly and in the process is moved into view.

<rdar://problem/16743250>

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