headless: Move hidden commands and events to experimental domains

headless/lib/browser/client_api_generator_unittest.py

Index: headless/lib/browser/client_api_generator_unittest.py
diff --git a/headless/lib/browser/client_api_generator_unittest.py b/headless/lib/browser/client_api_generator_unittest.py
index 433d0d837b871b51cfd556bc43467273ffe1ddb4..e149fb426ff644199695cca8767d74fe8c3fd0fe 100644
--- a/headless/lib/browser/client_api_generator_unittest.py
+++ b/headless/lib/browser/client_api_generator_unittest.py
@@ -343,6 +343,31 @@ class ClientApiGeneratorTest(unittest.TestCase):
     types = json_api['domains'][0]['types']
     self.assertListEqual(types, expected_types)
 
+  def test_HideHiddenDomains(self):
+    json_api = {
+      'domains': [
+        {
+          'domain': 'domain',
+          'hidden': True,
+          'commands': [
+            {
+              'name': 'FooCommand',
+            }
+          ],
+          'events': [
+            {
+              'name': 'BarEvent',
+            }
+          ]
+        }
+      ]
+    }
+    client_api_generator.HideHiddenDomains(json_api)
+    for command in json_api['domains'][0]['commands']:
+      self.assertTrue(command['hidden'])
+    for event in json_api['domains'][0]['events']:
+      self.assertTrue(command['hidden'])
+
   def test_Generate(self):
     json_api = {
       'domains': [