The tests are similar because MpdWriter uses MpdBuilder.
Also changing tests and enabling them in mpd_builder_unittest.cc.
Change-Id: I76a8cfca27c390a039de765231c76d083c3ca26b
The information is generated by Edwin's copyright.py script with some
minor manual modifications.
Chromium's original copyright notice is not replaced.
Also add LICENSE file taken from
https://sites.google.com/a/google.com/ospo/releasing#TOC-BSD-License
Change-Id: I231f09af96a0a611b1ca81e95cab82e12d7f529b