Cleanups in remoting.gyp

This change contains just cleanups, no functional changes.

1. PList files on mac are localized using a single rule
   instead of a separate action per file.
2. Single target on windows for resources instead of 2.

R=lambroslambrou@chromium.org

Review URL: https://codereview.chromium.org/145133004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246666 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246666