Fixing failures caused by migration of test block 14. Context: https://build.chromium.org/p/client.dart/builders/vm-kernel-linux-release-x64-be/builds/3619/steps/vm%20tests/logs/stdio
Fixing failures caused by migration of test block 14. Context: https://build.chromium.org/p/client.dart/builders/vm-kernel-linux-release-x64-be/builds/3619/steps/vm%20tests/logs/stdio

TBR=jcollins@google.com,rnystrom@google.com
BUG=

Review-Url: https://codereview.chromium.org/2993663002 .

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