Add dart2js_with_kernel_in_ssa flag to test.dart and pass it along to dart2js

tools/testing/dart/options.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:io';
 
 import 'configuration.dart';
 import 'path.dart';
 import 'runtime_updater.dart';
 import 'utils.dart';
@@ skipping 160 matching lines @@
     new _Option.bool('checked', 'Run tests in checked mode.'),
     new _Option.bool('strong', 'Run tests in strong mode.'),
     new _Option.bool('host_checked', 'Run compiler in checked mode.'),
     new _Option.bool('minified', 'Enable minification in the compiler.'),
     new _Option.bool(
         'csp', 'Run tests under Content Security Policy restrictions.'),
     new _Option.bool(
         'fast_startup', 'Pass the --fast-startup flag to dart2js.'),
     new _Option.bool('enable_asserts',
         'Pass the --enable-asserts flag to dart2js or to the vm.'),
-    new _Option.bool('dart2js_with_kernel',
-        'Enable the internal pipeline in dart2js to use kernel.'),
+    new _Option.bool(
+        'dart2js_with_kernel', 'Pass the --use-kernel flag to dart2js.'),
+    new _Option.bool('dart2js_with_kernel_in_ssa',
+        'Pass the --use-kernel-in-ssa flag to dart2js.'),
     new _Option.bool('hot_reload', 'Run hot reload stress tests.'),
     new _Option.bool(
         'hot_reload_rollback', 'Run hot reload rollback stress tests.'),
     new _Option.bool('use_blobs',
         'Use mmap instead of shared libraries for precompilation.'),
     new _Option.int('timeout', 'Timeout in seconds.', abbr: 't'),
     new _Option(
         'progress',
         '''Progress indication mode.
 
@@ skipping 394 matching lines @@
                 printTiming: data["time"] as bool,
                 printReport: data["report"] as bool,
                 reportInJson: data["report_in_json"] as bool,
                 resetBrowser: data["reset_browser_configuration"] as bool,
                 skipCompilation: data["skip_compilation"] as bool,
                 useBlobs: data["use_blobs"] as bool,
                 useSdk: data["use_sdk"] as bool,
                 useFastStartup: data["fast_startup"] as bool,
                 useEnableAsserts: data["enable_asserts"] as bool,
                 useDart2JSWithKernel: data["dart2js_with_kernel"] as bool,
+                useDart2JSWithKernelInSsa:
+                    data["dart2js_with_kernel_in_ssa"] as bool,
                 writeDebugLog: data["write_debug_log"] as bool,
                 writeTestOutcomeLog: data["write_test_outcome_log"] as bool,
                 drtPath: data["drt"] as String,
                 chromePath: data["chrome"] as String,
                 safariPath: data["safari"] as String,
                 firefoxPath: data["firefox"] as String,
                 dartPath: data["dart"] as String,
                 dartPrecompiledPath: data["dart_precompiled"] as String,
                 flutterPath: data["flutter"] as String,
                 taskCount: data["tasks"] as int,
@@ skipping 145 matching lines @@
       if (name == option.name) return option;
 
       // Allow hyphens instead of underscores as the separator since they are
       // more common for command line flags.
       if (name == option.name.replaceAll("_", "-")) return option;
     }
 
     return null;
   }
 }