No bug. Disabled test_input_number_mouse_events.html and test_input_number_rounding.html completely while I figure out why the syntax for disabling them on B2G and Android isn't working.

content/html/content/test/forms/mochitest.ini

@@ -25,9 +25,9 @@ support-files =
 [test_input_list_attribute.html]
 [test_input_number_key_events.html]
 # Spin buttons are hidden on Firefox OS and Firefox for Android:
-skip-if = toolkit == "gonk" || os == 'android'
-[test_input_number_mouse_events.html]
-[test_input_number_rounding.html]
+#skip-if = toolkit == "gonk" || os == 'android'
+#[test_input_number_mouse_events.html]
+#[test_input_number_rounding.html]
 [test_input_range_attr_order.html]
 [test_input_range_key_events.html]
 [test_input_range_mouse_and_touch_events.html]