Addressed feedbacks
- Now they are in ndkHelper:: name space
- Changed module name to ndk_helper
- Changed some static members to class var or stand alone function
- Added syncronization for JNIHelper.cpp
- For a documentation, I will work with doc writer for future improvement

Change-Id: I0055061a4f53b1904cde2e0339550ee277b35fc5

Addressed most of feedbacks,
- Switched coding standard to Chrome style
- Update JNI helper, and documented
- Fixed other issues that is pointed out

Change-Id: Icc729a55ed8dd613759f34a3fc35cb4949d2d205
47 files changed