Handler settings page.

chrome/browser/resources/options/handler_options.css

+/*
+ * Copyright (c) 2011 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#handlers-column-headers {
+  display: -webkit-box;
+}
+
+.handlers-type-column {
+  width: 100px;
+  -webkit-margin-end: 10px;
+  -webkit-margin-start: 14px;
+}
+
+.handlers-site-column {
+  color: #555;
+  max-width: 180px;
+}
+
+.handlers-site-column select {
+  max-width: 170px;
+}
+
+.handlers-remove-column {
+  -webkit-box-flex: 1;
+}
+
+.handlers-remove-link {
+  color: #555;
+  cursor: pointer;
+  opacity: 0;
+  padding-left: 14px;
+  text-decoration: underline;
+  -webkit-transition: 0.15s opacity;
+}
+
+div > .handlers-remove-column {
+  opacity: 0;
+}
+
+div:hover > .handlers-remove-column {
+  opacity: 1;
+}
+
+#handlers {
+  min-height: 250px;
+}
+
+#handlers-list {
+  border-radius: 2px;
+  border: solid 1px #D9D9D9;
+  margin-bottom: 10px;
+  margin-top: 4px;
+}