Bug 877467 - Use a flat list when showing prompts. r=mfinkle
Bug 872143 - Make InputWidgetHelper use async prompts. r=mfinkle
Bug 872147 - Make FeedHandler use async prompts. r=mfinkle
Bug 872149 - Make Payments ui use async prompts. r=mfinkle
Bug 877200 - Make history menu use async prompts. r=mfinkle