Register EventLogging schemas the cool new way

Register the schemas and the mobile.loggingSchemas module with the
appropriate dependencies when the EventLoggingRegisterSchemas hook is
fired.

If the EventLoggingRegisterSchemas hooks isn't fired, then register a
stub mobile.loggingSchemas module when the ResourceLoaderRegisterModule
hook fires.

Bug: 66055
Change-Id: Idf142ee46b8fd3dcbcd4cb7970b7dc3bc89cc1f3
Merge "Register EventLogging schemas the cool new way"