Bug 868274 - Review comment: commenting in HealthReportGenerator.
Bug 873360 - Profile information storage.
Test for ProfileInformationCache.
Bug 868449 - Provide an EnvironmentBuilder to generate environments for FHR.
Test for EnvironmentBuilder.
Bug 868274 - Extend generateDocument to extract data from profile.
Bugs 868274, 868449, 873360 - Firefox Health Report storage. r=nalexander