Index: wp-admin/images/date-button.gif
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Cannot display: file marked as a binary type.
svn:mime-type = application/octet-stream
Index: wp-admin/css/media.dev.css
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--- wp-admin/css/media.dev.css	(revision 21227)
+++ wp-admin/css/media.dev.css	(working copy)
@@ -67,6 +67,28 @@
 	background: url(../images/align-right.png) no-repeat center left;
 }
 
+@media only screen and (-webkit-min-device-pixel-ratio: 1.5) {
+	.image-align-none-label {
+		background-image: url(../images/align-none-2x.png);
+		background-size: 21px 15px;
+	}
+
+	.image-align-left-label {
+		background-image: url(../images/align-left-2x.png);
+		background-size: 22px 15px;
+	}
+
+	.image-align-center-label {
+		background-image: url(../images/align-center-2x.png);
+		background-size: 21px 15px;
+	}
+
+	.image-align-right-label {
+		background-image: url(../images/align-right-2x.png);
+		background-size: 22px 15px;
+	}
+}
+
 tr.image-size td {
 	width: 460px;
 }