Switch the about:gpu implementation from an about handler to dom_ui....

chrome/browser/resources/gpu/main.css

Index: chrome/browser/resources/gpu/main.css
===================================================================
--- chrome/browser/resources/gpu/main.css	(revision 0)
+++ chrome/browser/resources/gpu/main.css	(revision 0)
@@ -0,0 +1,142 @@
+/*
+Copyright (c) 2010 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.
+*/
+
+* {
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+}
+body {
+  font-family: sans-serif;
+}
+
+.tabSwitcher {
+  margin-top: 10px;
+  margin-left: 10px;
+}
+
+.tabSwitcher th {
+  background: rgb(229,236,249);
+  cursor: pointer;
+  background-clip: border-box;
+  border-top-left-radius: 5px 5px;
+  border-top-right-radius: 5px 5px;
+  padding-left: 4px;
+  padding-top: 4px;
+  padding-right: 4px;
+  font-size: 12px;
+  margin-left: 30px;
+}
+
+.tabSwitcher th.selected, .tabSwitcherLine {
+  background: rgb(195,217,255);
+}
+
+.tabSwitcherLine {
+  height: 10px;
+}
+
+#categoryTabHandles ul {
+  list-style: none;
+  padding: 0;
+  margin: 0;
+}
+
+#categoryTabHandles {
+  border-bottom: 1px solid #555;
+  background: #aaa;
+  overflow: hidden;
+}
+
+#categoryTabHandles li {
+  float: left;
+  margin-left: 5px;
+}
+
+#categoryTabHandles a {
+  text-decoration: none;
+  text-align: center;
+  display: inline-block;
+  margin-top: 4px;
+  padding: 5px 10px 3px 10px;
+  -webkit-border-top-right-radius: 8px;
+  -webkit-border-top-left-radius: 8px;
+  background-clip: border-box;
+  background: #ccc;
+}
+
+#categoryTabHandles a:hover {
+  background: #eee;
+}
+
+#categoryTabHandles a:visited,
+#categoryTabHandles a  {
+  color: blue;
+}
+
+#categoryTabHandles .selected {
+  background: white;
+}
+
+#categoryTabHandles a.selected {
+  position:relative;
+  top: 3px;
+  color: black;
+}
+
+/*
+ * Styles for TABLE that uses a thin collapsed border.
+ */
+table.styledTable {
+  border-collapse:collapse;
+}
+
+table.styledTable,
+.styledTable th,
+.styledTable td {
+  border: 1px solid #777;
+  padding-right: 4px;
+  padding-left: 4px;
+}
+
+.styledTable th {
+  background: rgb(224,236,255);
+}
+
+.styledTable th.title {
+  background: rgb(255,217,217);
+}
+
+/**
+ * Styling for an emphasized button.
+ */
+.bigButton {
+  font-size: 100%;
+  font-weight: bold;
+}
+
+/**
+ * InfoTab
+ */
+#infoText {
+  overflow: auto;
+  padding: 10px;
+  font-family: monospace;
+}
+
+#infoText table,
+#infoText tr,
+#infoText td {
+  text-algin: top;
+  border-collapse:collapse;
+}
+
+#infoText table.border,
+#infoText table.border tr,
+#infoText table.border td {
+  border: 1px solid #777;
+}
+
+