This allows the tools such as dartdoc to operate on dart:io
in the same way as it does with other code and allows the
implemenation of parts of dart:io for dart2js if we ever
want to do that.
The current patching is very VM specific. I have only moved
stuff to patch files when they actually need to be. For
Process and Socket everything has to be moved because they
use native fields. For the rest, only the individual native
calls have been put in patch files.
R=sgjesse@google.com,ajohnsen@google.com
BUG=
Review URL: https://codereview.chromium.org//11337019
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@14259 260f80e4-7a28-3924-810f-c04153c831b5
ager@google.com