diff -r 000000000000 -r 6474c204b198 dom/bindings/mach_commands.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/bindings/mach_commands.py	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,41 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, # You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from __future__ import unicode_literals
+
+import os
+import sys
+
+from mach.decorators import (
+    CommandArgument,
+    CommandProvider,
+    Command,
+)
+
+from mozbuild.base import MachCommandBase
+
+
+@CommandProvider
+class WebIDLProvider(MachCommandBase):
+    @Command('webidl-example', category='misc',
+        description='Generate example files for a WebIDL interface.')
+    @CommandArgument('interface', nargs='+',
+        help='Interface(s) whose examples to generate.')
+    def webidl_example(self, interface):
+        from mozwebidlcodegen import BuildSystemWebIDL
+
+        manager = self._spawn(BuildSystemWebIDL).manager
+        for i in interface:
+            manager.generate_example_files(i)
+
+    @Command('webidl-parser-test', category='testing',
+        description='Run WebIDL tests.')
+    @CommandArgument('--verbose', '-v', action='store_true',
+        help='Run tests in verbose mode.')
+    def webidl_test(self, verbose=False):
+        sys.path.insert(0, os.path.join(self.topsrcdir, 'other-licenses',
+            'ply'))
+
+        from runtests import run_tests
+        return run_tests(None, verbose=verbose)