I find that when draw svg file to canvas, then toDataURL method doesn't work.
cosole print "SecurityError". this svg file doesn't refer any other image or other resource from other domain, just draw some text.
I search on web about this question, it is say that is about crossOrigin issue.
But it is bug sure. chrome new version (32.0.1700.77) had fixed it.
please refer following sample.
BTY: I submit this issue to Apple's Safari. it had fix this issue in Yosemite. Safari 8.0.
Microsoft, Keep up.