Disable formatting and add new-lines to make tests faster.

test/codegen_test.dart

Index: test/codegen_test.dart
diff --git a/test/codegen_test.dart b/test/codegen_test.dart
index c357983866a7c6120759f8c3f2bfb822155a1ea9..0d70bb7394a7417422424ef04b8f53fc0e268fc3 100644
--- a/test/codegen_test.dart
+++ b/test/codegen_test.dart
@@ -118,7 +118,7 @@ main(arguments) {
           checkSdk: true,
           forceCompile: true,
           outputDart: dartGen,
-          formatOutput: dartGen);
+          formatOutput: false);
       var sdkPath = path.join(testDir, 'generated_sdk');
       var testSdk = new TypeResolver.fromDir(sdkPath, options);
       var result = compile('dart:core', testSdk, options);