Only skip pipe playback for blurs GM in FIXED mode.
Only skip pipe playback for blurs GM in FIXED mode.

Only skip it when it would actually fail. Also add a comment
describing why it fails:

// SkCanvas::drawCircle, used by this test, performs a quick reject.
// The large size given to the device used by SkGPipeCanvas means that
// the device clip will not be set properly and circles will be
// rejected when in FIXED.

Review URL: https://codereview.appspot.com/6354058

git-svn-id: e8541e15acce502a64c929015570ad1648e548cd@4414 2bbb7eff-a529-9590-31e7-b0007b416f81

mrobinson/skia,metajack/skia,metajack/skia,metajack/skia,Cue/skia,mrobinson/skia,Cue/skia,metajack/skia,mrobinson/skia,mrobinson/skia,Cue/skia,Cue/skia,mrobinson/skia