Fix typed_arrays_simd_test.dart breakage from Uint32x4 -> Int32x4 rename.
Fix typed_arrays_simd_test.dart breakage from Uint32x4 -> Int32x4 rename.

TBR

Review URL: https://codereview.chromium.org//58453003

git-svn-id: c93d8a2297af3b929165606efe145742a534bc71@29856 260f80e4-7a28-3924-810f-c04153c831b5

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