Make getFaviconImageSet work with all expected URL types.

chrome/test/data/webui/util_test.html

Index: chrome/test/data/webui/util_test.html
diff --git a/chrome/test/data/webui/util_test.html b/chrome/test/data/webui/util_test.html
index 0c8c4eabf43456b81243084ea5de692a6e0c649b..5b11aa266e1f83cc3fadc5f99144947d9dc344e4 100644
--- a/chrome/test/data/webui/util_test.html
+++ b/chrome/test/data/webui/util_test.html
@@ -20,6 +20,36 @@ function testQuoteString() {
   assertEquals(null, match);
 }
 
+/* Test the case where the origin URL is passed. */

[Dan Beam, 2016/04/27 02:18:31]

nit: single-line comments, i.e. // Test ...

[dpapad, 2016/04/27 17:21:47]

Done.

+function testGetFaviconImageSet_Origin() {
+  var url = 'http://foo.com';
+  var expectedDesktop = '-webkit-image-set(' +
+      'url("chrome://favicon/size/16@1x/origin/http://foo.com") 1x, ' +
+      'url("chrome://favicon/size/16@2x/origin/http://foo.com") 2x)';
+  var expectedOther = '-webkit-image-set(' +
+      'url("chrome://favicon/size/16@1x/origin/http://foo.com") ' +
+      window.devicePixelRatio + 'x)';
+
+  var isDesktop = cr.isMac || cr.isChromeOS || cr.isWindows || cr.isLinux;
+  var expected = isDesktop ? expectedDesktop : expectedOther;
+  assertEquals(expected, getFaviconImageSet(url));
+}
+
+/* Test the case where the favicon URL is passed. */
+function testGetFaviconImageSet_IconUrl() {
+  var url = 'http://foo.com/foo.ico';
+  var expectedDesktop = '-webkit-image-set(' +
+      'url("chrome://favicon/size/16@1x/iconurl/http://foo.com/foo.ico") 1x, ' +
+      'url("chrome://favicon/size/16@2x/iconurl/http://foo.com/foo.ico") 2x)';
+  var expectedOther = '-webkit-image-set(' +
+      'url("chrome://favicon/size/16@1x/iconurl/http://foo.com/foo.ico") ' +
+      window.devicePixelRatio + 'x)';
+
+  var isDesktop = cr.isMac || cr.isChromeOS || cr.isWindows || cr.isLinux;
+  var expected = isDesktop ? expectedDesktop : expectedOther;
+  assertEquals(expected, getFaviconImageSet(url));
+}
+
 </script>
 </body>
 </html>