Make VM JSON parser parse doubles without doing substring.

runtime/vm/object.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/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 9432 matching lines @@
   set_index(libs.Length());
   libs.Add(*this);
 }
 
 
 RawLibrary* Library::AsyncLibrary() {
   return Isolate::Current()->object_store()->async_library();
 }
 
 
+RawLibrary* Library::ConvertLibrary() {
+  return Isolate::Current()->object_store()->convert_library();
+}
+
+
 RawLibrary* Library::CoreLibrary() {
   return Isolate::Current()->object_store()->core_library();
 }
 
 
 RawLibrary* Library::CollectionLibrary() {
   return Isolate::Current()->object_store()->collection_library();
 }
 
 
@@ skipping 9572 matching lines @@
   return tag_label.ToCString();
 }
 
 
 void UserTag::PrintJSONImpl(JSONStream* stream, bool ref) const {
   Instance::PrintJSONImpl(stream, ref);
 }
 
 
 }  // namespace dart