Stop expecting errors when pausing, resuming or canceling a canceled stream.
Stop expecting errors when pausing, resuming or canceling a canceled stream.

Also stop expecting an error if resuming an unpaused stream.
It's better to forgive.

Review URL: https://codereview.chromium.org//13529007

git-svn-id: c93d8a2297af3b929165606efe145742a534bc71@20863 260f80e4-7a28-3924-810f-c04153c831b5

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