[CFE] Increase timeout on fasta/bootstrap_test and add -Dbenchmark=tr…

…ue to get details into runtime

The test runs 3 processes, each has a timeout of 60 seconds.
On my machine each takes ~16 seconds, but apparently on the bots it
times out (i.e. will take more than 60 seconds).

This CL increases the timeout to two minutes and adds a flag which
will print timings for visibility into what takes time.

Probably fixes #49202

Change-Id: I1b178368e85054db0822b1c154f47eeffc2baf52
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/248580
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>

pkg/front_end/test/fasta/bootstrap_test.dart

@@ -48,15 +48,20 @@ Future runCompiler(Uri compiler, Uri input, Uri output) async {
   Uri dartVm = Uri.base.resolveUri(new Uri.file(Platform.resolvedExecutable));
   String executable = dartVm.toFilePath();
   List<String> arguments = <String>[
+    "-Dbenchmark=true",
     compiler.toFilePath(),
     "${Flags.compileSdk}=sdk/",
     "${Flags.output}=${output.toFilePath()}",
     Flags.verify,
     input.toFilePath(),
+    "-Dbenchmark=true",
   ];
   print('Running: $executable ${arguments.join(' ')}');
-  StdioProcess result =
-      await StdioProcess.run(executable, arguments, suppressOutput: false);
+  Stopwatch stopwatch = new Stopwatch()..start();
+  StdioProcess result = await StdioProcess.run(executable, arguments,
+      suppressOutput: false, timeout: const Duration(minutes: 2));
+  print("Run finished with exit code ${result.exitCode}"
+      " in ${stopwatch.elapsed}");
   if (result.exitCode != 0) {
     throw "Compilation failed:\n${result.output}";
   }

pkg/front_end/test/spell_checking_list_tests.txt

@@ -175,6 +175,7 @@ datatypes
 day
 days
 db
+dbenchmark
 ddart
 dds
 debugger