[Webkit-unassigned] [Bug 71767] New: NWRT should prompt user to install dependencies

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=71767

           Summary: NWRT should prompt user to install dependencies
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: vanuan at gmail.com


NRWT is crashing when xvfb is not installed:

    AttributeError: GtkDriver instance has no attribute '_server_process'
    worker/0 raised OSError('[Errno 2] No such file or directory'):

Full traceback:
http://pastebin.com/B5pE8AJg

Giving a warning to check if all dependencies is installed instead of crashing with exception would be great.

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