Revert 229984 "Adding a logging class to cast. "

This is causing compile failure on Win.
http://build.chromium.org/p/chromium/builders/Win/builds/17536

> Adding a logging class to cast. 
> This cl is first in a series - follow-up cl's will include using this class in Cast and performing data analysis.
> 
> Review URL: https://codereview.chromium.org/26909002

TBR=mikhal@google.com

Review URL: https://codereview.chromium.org/34003004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230046 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230046