The warnings and warnings-as-errors are enabled by set chromium_code to
1. Chromium build disables warnings and warnings-as-errors by default
on external contents.
And fix the errors with them enabled. Mostly defined but not used,
sign-unsign comparison, unsigned string formatting, and return value not
used etc.
Change-Id: I305b63924955a84172e98e0ebfe5aba0f11bdb37
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
Kongqun Yang