Revert 230785 "Fix Mac 64-bit components build."

Patch reverted by request of mcasas.

> Fix Mac 64-bit components build.
> 
> BUG=288562
> TEST=it builds
> TBR=dalecurtis@chromium.org
> 
> Review URL: https://codereview.chromium.org/40493003

TBR=avi@chromium.org

Review URL: https://codereview.chromium.org/54203004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232129 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232129