import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

layout/reftests/svg/sizing/standalone--auto-pct--px-pct--viewBox.svg

@@ -0,0 +1,23 @@
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1"
+     style="width:auto; height:49%;" width="70" height="10%"
+     viewBox="0 0 1 1">
+
+  <!-- From https://bugzilla.mozilla.org/show_bug.cgi?id=294086 -->
+
+  <title>Test: width:auto; height:49%; width="70" height="10%" viewBox="0 0 1 1"</title>
+
+  <desc>
+    This testcase checks that the intrinsic ratio will be taken from the
+    'viewBox' attribute when the CSS 'width' property is set to 'auto', the
+    'height' property is set to some other value, and the 'width' and 'height'
+    attributes do not provide an intrinsic ratio. You should see a blue square
+    with sides 49% the height of the content area when viewing this file.
+  </desc>
+
+  <rect width="100%" height="100%" fill="blue"/>
+
+</svg>