Strong mode fix for compile_time_constant10_test.dart
Strong mode fix for compile_time_constant10_test.dart

The method CT.test is passed either Expect.isTrue or Expect.isFalse,
both of which expect a second argument of type String.

Change-Id: I4f661d5758b52d4a78df5ab9cae9072d0180739a
Reviewed-on: https://dart-review.googlesource.com/19285
Reviewed-by: Morten Krogh-jespersen <a3badf6957a2280571d62292a72c7a0ea2f744f0@google.com>
Commit-Queue: Paul Berry <72d414e3a99fb120308437779d51667bcc0984eb@google.com>

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