Create frequently used symbols in the vm isolate

vm/raw_object_snapshot.cc

 // Copyright (c) 2012, 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/bigint_operations.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/snapshot.h"
+#include "vm/symbols.h"
 #include "vm/visitor.h"
 
 namespace dart {
 
 #define NEW_OBJECT(type)                                                       \
   ((kind == Snapshot::kFull) ? reader->New##type() : type::New())
 
 #define NEW_OBJECT_WITH_LEN(type, len)                                         \
   ((kind == Snapshot::kFull) ? reader->New##type(len) : type::New(len))
 
@@ skipping 1335 matching lines @@
                           intptr_t len,
                           intptr_t tags) {
   ASSERT(reader != NULL);
   if (RawObject::IsCanonical(tags)) {
     // Set up canonical string object.
     ASSERT(reader != NULL);
     CharacterType* ptr = reinterpret_cast<CharacterType*>(ZoneAllocator(len));
     for (intptr_t i = 0; i < len; i++) {
       ptr[i] = reader->Read<CharacterType>();
     }
-    *str_obj ^= String::NewSymbol(ptr, len);
+    *str_obj ^= Symbols::New(ptr, len);
   } else {
     // Set up the string object.
     *str_obj = HandleType::New(len, Heap::kNew);
     str_obj->set_tags(tags);
     str_obj->SetHash(0);  // Will get computed when needed.
     for (intptr_t i = 0; i < len; i++) {
       *str_obj->CharAddr(i) = reader->Read<CharacterType>();
     }
   }
 }
@@ skipping 611 matching lines @@
   writer->Write<RawObject*>(ptr()->num_bracket_expressions_);
   writer->WriteObjectImpl(ptr()->pattern_);
   writer->WriteIntptrValue(ptr()->type_);
   writer->WriteIntptrValue(ptr()->flags_);
 
   // Do not write out the data part which is native.
 }
 
 
 }  // namespace dart