Check in codegen test expectations.

test/codegen/expect/corelib/string_replace_dollar_test.js

Index: test/codegen/expect/corelib/string_replace_dollar_test.js
diff --git a/test/codegen/expect/corelib/string_replace_dollar_test.js b/test/codegen/expect/corelib/string_replace_dollar_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..b5c147f5b1e33b2495c77caae948d5f24735611a
--- /dev/null
+++ b/test/codegen/expect/corelib/string_replace_dollar_test.js
@@ -0,0 +1,33 @@
+dart_library.library('corelib/string_replace_dollar_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__string_replace_dollar_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 string_replace_dollar_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  string_replace_dollar_test.main = function() {
+    let jsText = "'$'\n";
+    let htmlStr = '%%DART';
+    let htmlOut = htmlStr[dartx.replaceAll]("%%DART", jsText);
+    expect$.Expect.equals(jsText, htmlOut);
+    htmlOut = htmlStr[dartx.replaceFirst]("%%DART", jsText);
+    expect$.Expect.equals(jsText, htmlOut);
+    htmlOut = htmlStr[dartx.replaceAll](core.RegExp.new("%%DART"), jsText);
+    expect$.Expect.equals(jsText, htmlOut);
+    htmlOut = htmlStr[dartx.replaceFirst](core.RegExp.new("%%DART"), jsText);
+    expect$.Expect.equals(jsText, htmlOut);
+    let doubleDollar = "$'$`";
+    let string = "flip-flip-flop";
+    let result = string[dartx.replaceFirst]("flip", doubleDollar);
+    expect$.Expect.equals("$'$`-flip-flop", result);
+    result = string[dartx.replaceAll]("flip", doubleDollar);
+    expect$.Expect.equals("$'$`-$'$`-flop", result);
+  };
+  dart.fn(string_replace_dollar_test.main, VoidTodynamic());
+  // Exports:
+  exports.string_replace_dollar_test = string_replace_dollar_test;
+});