clang-format: Make clang-format-diff.py format java files.

git-svn-id: svn://svn.chromium.org/llvm-project/cfe/trunk/tools/clang-format@223685 0b72dbe1-c17f-4bc7-b9db-2b4152be0356
diff --git a/clang-format-diff.py b/clang-format-diff.py
index 247dace..23adb07 100755
--- a/clang-format-diff.py
+++ b/clang-format-diff.py
@@ -49,7 +49,7 @@
                       '(case sensitive, overrides -iregex)')
   parser.add_argument('-iregex', metavar='PATTERN', default=
                       r'.*\.(cpp|cc|c\+\+|cxx|c|cl|h|hpp|m|mm|inc|js|proto'
-                      r'|protodevel)',
+                      r'|protodevel|java)',
                       help='custom pattern selecting file paths to reformat '
                       '(case insensitive, overridden by -regex)')
   parser.add_argument('-v', '--verbose', action='store_true',