Implement handlified String::Flatten.

src/factory.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "factory.h"
 
 #include "isolate-inl.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 511 matching lines @@
       continue;
     }
     break;
   }
 
   if (str->IsSlicedString()) {
     Handle<SlicedString> slice = Handle<SlicedString>::cast(str);
     str = Handle<String>(slice->parent(), isolate());
     offset += slice->offset();
   } else {
-    str = FlattenGetString(str);
+    str = String::Flatten(str);
   }
 
   ASSERT(str->IsSeqString() || str->IsExternalString());
   Handle<SlicedString> slice = NewRawSlicedString(
       str->IsOneByteRepresentation() ? String::ONE_BYTE_ENCODING
                                      : String::TWO_BYTE_ENCODING);
 
   slice->set_hash_field(String::kEmptyHashField);
   slice->set_length(length);
   slice->set_parent(*str);
@@ skipping 1444 matching lines @@
   if (name->Equals(h->infinity_string())) return infinity_value();
   return Handle<Object>::null();
 }
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
 } }  // namespace v8::internal