Revert r229533 "[GCM] Initial work to set up directory structure and introduce socket integration"
Breaks main waterfall.

TBR=zea

Review URL: https://codereview.chromium.org/29273008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229543 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229543