Bug 929701 - Part 1: Don't use an attribute with type |any| in DOMMMIError. r=hsinyi,smaug
Bug 929701 - Part 2: Implement DOMMMIError by C++. r=smaug
Bug 929701 - Part 3: Remove JS-implemented DOMMMIError. r=hsinyi
Bug 929701 - Part 4-1: Convert test_mobile_mmi.js to Promise. r=hsinyi
Bug 929701 - Part 4-2: Add marionette test for changing pin via mmi. r=hsinyi