Some events in the future may not have originated
from a class, so we shouldn't be using ComponentName.
Bug:17259858
Change-Id: Id7fe3245b91596cf27ae4ec51655602f01665622
Based on feedback from API council, updated the API.
Also added support for querying the event log.
Change-Id: Ibaa008b9e5bd145acdfe8e20c25c2ed2d96be123