Expose remaining 'errors' in an unified dart:core.

runtime/vm/exceptions.cc

 // Copyright (c) 2011, 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 "vm/exceptions.h"
 
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/flags.h"
 #include "vm/object.h"
@@ skipping 242 matching lines @@
 // Allocate, initialize, and throw a TypeError.
 void Exceptions::CreateAndThrowTypeError(intptr_t location,
                                          const String& src_type_name,
                                          const String& dst_type_name,
                                          const String& dst_name,
                                          const String& malformed_error) {
   // Allocate a new instance of TypeError or CastException.
   Instance& type_error = Instance::Handle();
   Class& cls = Class::Handle();
   if (dst_name.Equals(kCastExceptionDstName)) {
-    type_error = NewInstance("CastException");
+    type_error = NewInstance("CastExceptionImplementation");
     cls = type_error.clazz();
     cls = cls.SuperClass();
   } else {
-    type_error = NewInstance("TypeError");
+    type_error = NewInstance("TypeErrorImplementation");
     cls = type_error.clazz();
   }
 
   // Initialize 'url', 'line', and 'column' fields.
   DartFrameIterator iterator;
   const Script& script = Script::Handle(GetCallerScript(&iterator));
   // Location fields are defined in AssertionError, the superclass of TypeError.
   const Class& assertion_error_class = Class::Handle(cls.SuperClass());
   SetLocationFields(type_error, assertion_error_class, script, location);
 
@@ skipping 156 matching lines @@
     case kIsolateSpawn:
       library = Library::IsolateLibrary();
       class_name = Symbols::New("IsolateSpawnException");
       break;
   }
 
   return DartLibraryCalls::ExceptionCreate(library, class_name, arguments);
 }
 
 }  // namespace dart