ember-css-url@1.0.0.patch

diff --git a/dist/index.js b/dist/index.js
index 9e0053dfc561890ab1a10a7dadc6eacbc3c49c74..909f0c075c5aa09fabb4f293002177a71784e0b0 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -19,7 +19,7 @@ function cssUrl(propertyName, url) {
   if (m) {
     let proto = m[1].toLowerCase();
 
-    if (proto !== 'http' && proto !== 'https') {
+    if (proto !== 'http' && proto !== 'https' && proto !== 'data') {
       throw new Error(`disallowed protocol in css url: ${url}`);
     }
   } // Step 3: Use our own double quotes, which the url cannot break out