Implement handlified String::Equals and Name::Equals.

test/cctest/test-parsing.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 1349 matching lines @@
           "Parser failed on:\n"
           "\t%s\n"
           "with error:\n"
           "\t%s\n"
           "However, the preparser succeeded",
           source->ToCString().get(), message_string->ToCString().get());
       CHECK(false);
     }
     // Check that preparser and parser produce the same error.
     i::Handle<i::String> preparser_message = FormatMessage(&data);
-    if (!message_string->Equals(*preparser_message)) {
+    if (!i::String::Equals(message_string, preparser_message)) {
       i::OS::Print(
           "Expected parser and preparser to produce the same error on:\n"
           "\t%s\n"
           "However, found the following error messages\n"
           "\tparser:    %s\n"
           "\tpreparser: %s\n",
           source->ToCString().get(),
           message_string->ToCString().get(),
           preparser_message->ToCString().get());
       CHECK(false);
@@ skipping 1187 matching lines @@
   RunParserSyncTest(assignment_context_data, bad_statement_data_common, kError);
   RunParserSyncTest(assignment_context_data, bad_statement_data_for_assignment,
                     kError);
 
   RunParserSyncTest(prefix_context_data, good_statement_data, kSuccess);
   RunParserSyncTest(prefix_context_data, bad_statement_data_common, kError);
 
   RunParserSyncTest(postfix_context_data, good_statement_data, kSuccess);
   RunParserSyncTest(postfix_context_data, bad_statement_data_common, kError);
 }