Remove deprecated string features.

runtime/vm/dart_api_impl_test.cc

 // Copyright (c) 2012, 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.
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/json.h"
 #include "platform/utils.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_api_impl.h"
@@ skipping 7392 matching lines @@
 TEST_CASE(ExternalStringDeoptimize) {
   const char* kScriptChars =
       "String str = 'A';\n"
       "class A {\n"
       "  static change_str(String s) native 'A_change_str';\n"
       "}\n"
       "sum_chars(String s, bool b) {\n"
       "  var result = 0;\n"
       "  for (var i = 0; i < s.length; i++) {\n"
       "    if (b && i == 0) A.change_str(str);\n"
-      "    result += s.charCodeAt(i);"
+      "    result += s.codeUnitAt(i);"
       "  }\n"
       "  return result;\n"
       "}\n"
       "main() {\n"
       "  str = '$str$str';\n"
       "  for (var i = 0; i < 2000; i++) sum_chars(str, false);\n"
       "  var x = sum_chars(str, false);\n"
       "  var y = sum_chars(str, true);\n"
       "  return x + y;\n"
       "}\n";
   Dart_Handle lib =
       TestCase::LoadTestScript(kScriptChars,
                                &ExternalStringDeoptimize_native_lookup);
   Dart_Handle result = Dart_Invoke(lib,
                                    NewString("main"),
                                    0,
                                    NULL);
   int64_t value = 0;
   result = Dart_IntegerToInt64(result, &value);
   EXPECT_VALID(result);
   EXPECT_EQ(260, value);
 }
 
 #endif  // defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64).
 
 }  // namespace dart