Bug 870925 - Part 1: Add constants and SubmissionsFieldName enum.
Bug 870925 - Part 2: Add init functions and UploadRequestDelegate.
Bug 870925 - Part 3: Add SubmissionsStatusCounter.
Bug 870925 - Part 4: Record FHR submissions data.
Bug 870925 - Part 5: Add HealthReportStorageStub for testing.
Bug 870925 - Part 6: Add TestSubmissionsStatusCounter.
Bug 870925 - Part 7: Add getSharedPreferences() to FakeProfileTestCase.
Bug 870925 - Part 8: Remove individual getCacheSuffix implementations.
Bug 870925 - Followup: Refactor submissions attempt increment for clarity.
Bug 870925 - Part 9: Refactor constructors for mocking purposes.
Bug 870925 - Part 10: Add StubDelegate.
Bug 870925 - Part 11: Add first and continuation attempt tests.
Bug 870925 - Part 12: Add success and null document tests.