Declare dependency from dart_io targets to zlib
Declare dependency from dart_io targets to zlib

runtime/bin/filter.cc uses zlib and is included in all of the dart_io
variants, so those targets should declare a dependency on zlib. This
dependency was being picked up incidentally by other targets before.

R=zra@google.com

Review-Url: https://codereview.chromium.org/2797253003 .

dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dartino/dart-sdk