Reformatting media_optimization.cc and .h

Ran both tools/refactoring/webrtc_reformat.py and clang-format.
Changing VCMMediaOptimization -> MediaOptimization and
VCMEncodedFrameSample -> EncodedFrameSample.
Aligning the order of methods in .h and .cc files and fixing comments.

R=stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2265007

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4816 4adac7df-926f-26a2-2b94-8c16560cd09d
6 files changed