Revert of [regexp] Port RegExpCompile and RegExpToString

src/builtins/builtins-regexp.cc

Index: src/builtins/builtins-regexp.cc
diff --git a/src/builtins/builtins-regexp.cc b/src/builtins/builtins-regexp.cc
index cf95dd6fab138bab02a0ab781f86cc89d2d49015..2dbfb0c3e6d805b574ce405ece694409007491fb 100644
--- a/src/builtins/builtins-regexp.cc
+++ b/src/builtins/builtins-regexp.cc
@@ -148,36 +148,6 @@
                            RegExpInitialize(isolate, regexp, pattern, flags));
 }
 
-BUILTIN(RegExpPrototypeCompile) {
-  HandleScope scope(isolate);
-  CHECK_RECEIVER(JSRegExp, regexp, "RegExp.prototype.compile");
-
-  Handle<Object> pattern = args.atOrUndefined(isolate, 1);
-  Handle<Object> flags = args.atOrUndefined(isolate, 2);
-
-  if (pattern->IsJSRegExp()) {
-    Handle<JSRegExp> pattern_regexp = Handle<JSRegExp>::cast(pattern);
-
-    if (!flags->IsUndefined(isolate)) {
-      THROW_NEW_ERROR_RETURN_FAILURE(
-          isolate, NewTypeError(MessageTemplate::kRegExpFlags));
-    }
-
-    flags = PatternFlags(isolate, pattern_regexp);
-    ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-        isolate, pattern,
-        Object::GetProperty(pattern, isolate->factory()->source_string()));
-  }
-
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, regexp, RegExpInitialize(isolate, regexp, pattern, flags));
-
-  // Return undefined for compatibility with JSC.
-  // See http://crbug.com/585775 for web compat details.
-
-  return isolate->heap()->undefined_value();
-}
-
 #define APPEND_CHAR_FOR_FLAG(flag, c)                                        \
   do {                                                                       \
     Handle<Object> property;                                                 \
@@ -227,43 +197,6 @@
 
   Handle<JSRegExp> regexp = Handle<JSRegExp>::cast(recv);
   return regexp->source();
-}
-
-BUILTIN(RegExpPrototypeToString) {
-  HandleScope scope(isolate);
-  CHECK_RECEIVER(JSReceiver, recv, "RegExp.prototype.toString");
-
-  if (*recv == isolate->regexp_function()->prototype()) {
-    isolate->CountUsage(v8::Isolate::kRegExpPrototypeToString);
-  }
-
-  IncrementalStringBuilder builder(isolate);
-
-  builder.AppendCharacter('/');
-  {
-    Handle<Object> source;
-    ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-        isolate, source,
-        JSReceiver::GetProperty(recv, isolate->factory()->source_string()));
-    Handle<String> source_str;
-    ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, source_str,
-                                       Object::ToString(isolate, source));
-    builder.AppendString(source_str);
-  }
-
-  builder.AppendCharacter('/');
-  {
-    Handle<Object> flags;
-    ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-        isolate, flags,
-        JSReceiver::GetProperty(recv, isolate->factory()->flags_string()));
-    Handle<String> flags_str;
-    ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, flags_str,
-                                       Object::ToString(isolate, flags));
-    builder.AppendString(flags_str);
-  }
-
-  RETURN_RESULT_OR_FAILURE(isolate, builder.Finish());
 }
 
 // ES6 21.2.4.2.