BREAKING CHANGE: Remove === and !== in the VM compiler

runtime/vm/snapshot_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_debugger_api.h"
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_api_message.h"
@@ skipping 1043 matching lines @@
       "  Fields(int i, int j) : fld1 = i, fld2 = j {}"
       "  int fld1;"
       "  final int fld2;"
       "  static int fld3;"
       "  static const int fld4 = 10;"
       "}"
       "class FieldsTest {"
       "  static Fields testMain() {"
       "    Fields obj = new Fields(10, 20);"
       "    Fields.fld3 = 100;"
-      "    if (obj === null) {"
+      "    if (obj == null) {"
       "      throw new Exception('Allocation failure');"
       "    }"
       "    if (obj.fld1 != 10) {"
       "      throw new Exception('fld1 needs to be 10');"
       "    }"
       "    if (obj.fld2 != 20) {"
       "      throw new Exception('fld2 needs to be 20');"
       "    }"
       "    if (Fields.fld3 != 100) {"
       "      throw new Exception('Fields.fld3 needs to be 100');"
@@ skipping 1413 matching lines @@
   result = Dart_RunLoop();
   EXPECT(Dart_IsError(result));
   EXPECT(Dart_ErrorHasException(result));
   EXPECT_SUBSTRING("Exception: nulltruefalse123456æøå3.14[]100123456789\n",
                    Dart_GetError(result));
 
   Dart_ExitScope();
 }
 
 }  // namespace dart