[css-ui] Update caret-color tests

third_party/WebKit/LayoutTests/editing/caret/caret-color-003.html

Index: third_party/WebKit/LayoutTests/editing/caret/caret-color-003.html
diff --git a/third_party/WebKit/LayoutTests/editing/caret/caret-color-003.html b/third_party/WebKit/LayoutTests/editing/caret/caret-color-003.html
index ca2217969e5792d2a3d602a4f915b57c36b75cd7..c7348bd88e2e13e01ca1fd290ee6b356d94b8ce8 100644
--- a/third_party/WebKit/LayoutTests/editing/caret/caret-color-003.html
+++ b/third_party/WebKit/LayoutTests/editing/caret/caret-color-003.html
@@ -22,5 +22,10 @@
   <p>Test passes if, when the text area below is focused for editing, the text insertion caret is green,
   like the text in that textarea.</p>
   <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
-  <textarea autofocus></textarea>
+  <textarea id="test"></textarea>
+  <script>
+    window.onload = function() {
+      document.getElementById("test").focus();
+    }
+  </script>
 </body>