[WebUI] Fix rest of CSS style nits in misc. dirs so I can turn on CSS checker.

chrome/browser/resources/media_internals/media_internals.css

Index: chrome/browser/resources/media_internals/media_internals.css
diff --git a/chrome/browser/resources/media_internals/media_internals.css b/chrome/browser/resources/media_internals/media_internals.css
index a2387f81e3d54a2814735e72360431c80e2cfe9e..10032de8796fbe577630c9fc1258df340ac9bb0e 100644
--- a/chrome/browser/resources/media_internals/media_internals.css
+++ b/chrome/browser/resources/media_internals/media_internals.css
@@ -1,4 +1,4 @@
-/* Copyright (c) 2011 The Chromium Authors. All rights reserved.
+/* Copyright (c) 2012 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.
  */
@@ -11,7 +11,9 @@ h2 {
   margin: 15px 0 5px 0;
 }
 
-ul, p, canvas {
+ul,
+p,
+canvas {
   margin: 0;
 }