upgrade

web/assets/modernizr/feature-detects/css-mask.js

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+// this tests passes for webkit's proprietary `-webkit-mask` feature
+//   www.webkit.org/blog/181/css-masks/
+//   developer.apple.com/library/safari/#documentation/InternetWeb/Conceptual/SafariVisualEffectsProgGuide/Masks/Masks.html
+
+// it does not pass mozilla's implementation of `mask` for SVG
+
+//   developer.mozilla.org/en/CSS/mask
+//   developer.mozilla.org/En/Applying_SVG_effects_to_HTML_content
+
+// Can combine with clippaths for awesomeness: http://generic.cx/for/webkit/test.html
+
+Modernizr.addTest('cssmask', Modernizr.testAllProps('maskRepeat'));