Revert 270226 "Componentize GCM Part 1: create GCM component and..."
broke on Chrome OS: http://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20ChromeOS/builds/67606
> Componentize GCM Part 1: create GCM component and move some files over
>
> BUG=356716
> TEST=existing tests
>
> Review URL: https://codereview.chromium.org/
261853012
TBR=jianli@chromium.org
Review URL: https://codereview.chromium.org/
281783004
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@270234 0039d316-1c4b-4281-b951-d872f2087c98