Small improvements to clang-format documentation and integration
scripts.

git-svn-id: svn://svn.chromium.org/llvm-project/cfe/trunk/tools/clang-format@179676 0b72dbe1-c17f-4bc7-b9db-2b4152be0356
diff --git a/clang-format-diff.py b/clang-format-diff.py
index afed40f..68b5113 100755
--- a/clang-format-diff.py
+++ b/clang-format-diff.py
@@ -85,7 +85,8 @@
                                    'Reformat changed lines in diff')
   parser.add_argument('-p', default=1,
                       help='strip the smallest prefix containing P slashes')
-  parser.add_argument('-style', help='formatting style to apply (LLVM, Google)')
+  parser.add_argument('-style',
+                      help='formatting style to apply (LLVM, Google, Chromium)')
   args = parser.parse_args()
 
   filename = None