Merge "Add a base class of logger"
Merge "Remove ByteBuffer prefix which wrongly suppresses a class member."
Logger improvements

- Made each method static
- Added a setter of contest
- Added a function to entry counts periodically

Change-Id: I644dfa83c4fcb1933dc267fc4cfad05c9bb7adc7
Add logging

- add logging for delete
- add logging for inputchar

Change-Id: I684692385f4c3acb66ab2bcd6421dae1d84feb8f
Fix NPE

Change-Id: I27fc6268ea325f6e5f2a8bfd36499bf6c2b9f146
IME Logger improvement

- Eabled to handle an array value in the log entry
- Added word counter
- Added parameters to Log APIs
- Obfuscate user privacy support

Change-Id: I5e2a7d58113b0581e51d22d6dac9a6a6fdc34356
Merge (-sours) commit '5c7c33735df5313ecbf8e40efd72edeb0cf941b2' into oxygen_4.3

* commit '5c7c33735df5313ecbf8e40efd72edeb0cf941b2':
  IME Logger improvement
  Fix NPE
  Add logging
  Logger improvements