[webkit-help] Questions on building webkit cairo-port with html5 video support

[Yang Hawk]

Hi, I'm a new guy on building Webkit.

I need building Webkit cairo-port, with html5 video support.

I encountered a problem here:
in MediaPlayerPrivateQuickTimeVisualContext.cpp(650):
CGContextRef context = p->platformContext();

but when cairo is enabled, platformContext returned pointer with type of
struct _cairo *.

must html5 video support must use QuickTime,  or there is some macro to
avoid it?
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