Move tools to tool folder.

pkg/front_end/lib/src/fasta/testing/kernel_chain.dart

Index: pkg/front_end/lib/src/fasta/testing/kernel_chain.dart
diff --git a/pkg/front_end/lib/src/fasta/testing/kernel_chain.dart b/pkg/front_end/lib/src/fasta/testing/kernel_chain.dart
index b518f37adcfedb450b822e2a782c1504db45d9c6..02dc5a3185ae81663791bcb4c1bac0ad795cf753 100644
--- a/pkg/front_end/lib/src/fasta/testing/kernel_chain.dart
+++ b/pkg/front_end/lib/src/fasta/testing/kernel_chain.dart
@@ -70,8 +70,7 @@ class Verify extends Step<Program, Program, ChainContext> {
   String get name => "verify";
 
   Future<Result<Program>> run(Program program, ChainContext context) async {
-    var options =
-        new ProcessedOptions(new CompilerOptions()..throwOnErrors = false);
+    var options = new ProcessedOptions(new CompilerOptions());
     return await CompilerContext.runWithOptions(options, (_) async {
       var errors = verifyProgram(program, isOutline: !fullCompile);
       if (errors.isEmpty) {