Revert of Replace all remaining Oddball checks with new function

test/cctest/test-strings.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1092 matching lines @@
   for (int i = 0; (line = lines[i]); i++) {
     printf("%s\n", line);
     v8::Local<v8::Value> result =
         v8::Script::Compile(context,
                             v8::String::NewFromUtf8(CcTest::isolate(), line,
                                                     v8::NewStringType::kNormal)
                                 .ToLocalChecked())
             .ToLocalChecked()
             ->Run(context)
             .ToLocalChecked();
-    CHECK_EQ(results[i]->IsUndefined(CcTest::i_isolate()),
-             result->IsUndefined());
+    CHECK_EQ(results[i]->IsUndefined(), result->IsUndefined());
     CHECK_EQ(results[i]->IsNumber(), result->IsNumber());
     if (result->IsNumber()) {
       int32_t value = 0;
       CHECK(results[i]->ToInt32(&value));
       CHECK_EQ(value, result->ToInt32(context).ToLocalChecked()->Value());
     }
   }
 }
 
 
@@ skipping 399 matching lines @@
   }
   {
     HandleScope scope(isolate);
     v8::Local<v8::Value> result = CompileRun(
         "String.fromCharCode(432, 432, 432, 432, 432, "
         "432, 432, 432, 432, 432, 432, 432, 432, 432, "
         "432, 432, 432, 432, 432, 432, 432, 432, 432)");
     CHECK(v8::Utils::OpenHandle(*result)->IsSeqTwoByteString());
   }
 }