Check in codegen test expectations.

test/codegen/expect/language/critical_edge_test.js

Index: test/codegen/expect/language/critical_edge_test.js
diff --git a/test/codegen/expect/language/critical_edge_test.js b/test/codegen/expect/language/critical_edge_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..a075380a94e4a1f740413e71d6d184ae7b0845b0
--- /dev/null
+++ b/test/codegen/expect/language/critical_edge_test.js
@@ -0,0 +1,47 @@
+dart_library.library('language/critical_edge_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__critical_edge_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const critical_edge_test = Object.create(null);
+  let VoidTovoid = () => (VoidTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [])))();
+  let StringToString = () => (StringToString = dart.constFn(dart.definiteFunctionType(core.String, [core.String])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  critical_edge_test.parse = function(uri) {
+    let index = 0;
+    let char = -1;
+    function parseAuth() {
+      index;
+      char;
+    }
+    dart.fn(parseAuth, VoidTovoid());
+    let state = 0;
+    while (true) {
+      char = uri[dartx.codeUnitAt](index);
+      if (char == 1234) {
+        state = index == 0 ? 1 : 2;
+        break;
+      }
+      if (char == 58) {
+        return "good";
+      }
+      index++;
+    }
+    if (state == 1) {
+      core.print(char == 1234);
+      core.print(index == uri[dartx.length]);
+    }
+    return "bad";
+  };
+  dart.fn(critical_edge_test.parse, StringToString());
+  critical_edge_test.main = function() {
+    expect$.Expect.equals("good", critical_edge_test.parse("dart:_foreign_helper"));
+  };
+  dart.fn(critical_edge_test.main, VoidTodynamic());
+  // Exports:
+  exports.critical_edge_test = critical_edge_test;
+});