Add update menu item and app menu icon badge

testing/variations/fieldtrial_testing_config_android.json

Index: testing/variations/fieldtrial_testing_config_android.json
diff --git a/testing/variations/fieldtrial_testing_config_android.json b/testing/variations/fieldtrial_testing_config_android.json
index 7264df691817a95e4ee62031935fe5dfd6eca26a..3e29f0780e449dff8b1d525f46edf9d41cca79e3 100644
--- a/testing/variations/fieldtrial_testing_config_android.json
+++ b/testing/variations/fieldtrial_testing_config_android.json
@@ -339,6 +339,36 @@
             }
         }
     ],
+    "UpdateMenuItem": [
+        {
+            "group_name": "Enabled",
+            "params": {
+                "enable_update_menu_item": "true"
+            }
+        },
+        {
+            "group_name": "EnabledWithBadge",
+            "params": {
+                "enable_update_badge": "true",
+                "enable_update_menu_item": "true"
+            }
+        },
+        {
+            "group_name": "EnabledWithSummary",
+            "params": {
+                "enable_update_menu_item": "true",
+                "show_summary": "true"
+            }
+        },
+        {
+            "group_name": "EnabledWithCustomSummary",
+            "params": {
+                "custom_summary": "Custom update summary",
+                "enable_update_menu_item": "true",
+                "show_summary": "true"
+            }
+        }

[Steven Holte, 2015/12/16 20:18:36]

You might want to add your Control/Default group here, just for completeness. 
Note that right now only the first group listed here will be tested, so pick the
one you most want testing on.  We may start testing other groups in an FYI
build.

[Theresa, 2015/12/16 22:35:22]

Done.

+    ],
     "VarationsServiceControl": [
         {
             "group_name": "Interval_30min",