Bug 870171 - Part 0: Update licenses.
Bug 870171 - Part 1: Add getPrepopulateStorage method to the tests.
Bug 870171 - Part 2: Add the deleteEvents method and its test.
Bug 870171 - Part 3: Add deleteEvents to upload code.
Bug 870171 - Review comment: Spellcheck!
Bug 870171 - Review comment: Create unique FieldSpec names in test.