Added possibility to run quality modes test. Added possibility to input arguments to the test. The test will  (for each frame) log the values in contentMetrics to a txt-file. The txt-file can optionally be saved in a specific place. Fixed an issue where video_coding_test crashed if there weren't any parameter submitted to an input argument.

BUG=

Review URL: https://webrtc-codereview.appspot.com/772005

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@3068 4adac7df-926f-26a2-2b94-8c16560cd09d
7 files changed