Exclude win64 cross-compile dependencies from normal win64 build

BUG=166496
R=scottmg@chromium.org
TBR=scottmg@chromium.org

Review URL: https://chromiumcodereview.appspot.com/12252059

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@182653 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed