Fix #28740 demangle constructors in stack traces (A.A becomes new A) REDO

runtime/vm/object_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 "platform/globals.h"
 
 #include "vm/assembler.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
@@ skipping 3305 matching lines @@
       "main() {\n"
       "  (() => new MyClass())();\n"
       "}\n";
   Dart_Handle lib = TestCase::LoadTestScript(kScriptChars, NULL);
   EXPECT_VALID(lib);
   Dart_Handle result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_ERROR(result,
                "Unhandled exception:\n"
                "MyException\n"
                "#0      baz (test-lib:2:3)\n"
-               "#1      _OtherClass._OtherClass._named (test-lib:7:5)\n"
+               "#1      new _OtherClass._named (test-lib:7:5)\n"
                "#2      globalVar= (test-lib:12:7)\n"
                "#3      _bar (test-lib:16:3)\n"
                "#4      MyClass.field (test-lib:25:5)\n"
                "#5      MyClass.foo.fooHelper (test-lib:30:7)\n"
                "#6      MyClass.foo (test-lib:32:14)\n"
-               "#7      MyClass.MyClass.<anonymous closure> (test-lib:21:12)\n"
-               "#8      MyClass.MyClass (test-lib:21:18)\n"
+               "#7      new MyClass.<anonymous closure> (test-lib:21:12)\n"
+               "#8      new MyClass (test-lib:21:18)\n"
                "#9      main.<anonymous closure> (test-lib:37:14)\n"
                "#10     main (test-lib:37:24)");
 }
 
 
 ISOLATE_UNIT_TEST_CASE(WeakProperty_PreserveCrossGen) {
   Isolate* isolate = Isolate::Current();
   WeakProperty& weak = WeakProperty::Handle();
   {
     // Weak property and value in new. Key in old.
@@ skipping 1366 matching lines @@
   // utf32->utf16 conversion.
   int32_t char_codes[] = {0,      0x0a,   0x0d,   0x7f,   0xff,
                           0xffff, 0xd800, 0xdc00, 0xdbff, 0xdfff};
 
   const String& str =
       String::Handle(String::FromUTF32(char_codes, ARRAY_SIZE(char_codes)));
   EXPECT(str.Equals(char_codes, ARRAY_SIZE(char_codes)));
 }
 
 }  // namespace dart