Remove some of the unused classes stored in the object store.

runtime/vm/object_store.cc

 // Copyright (c) 2013, 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_store.h"
 
 #include "vm/exceptions.h"
 #include "vm/dart_entry.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/raw_object.h"
 #include "vm/symbols.h"
 #include "vm/visitor.h"
 
 namespace dart {
 
 ObjectStore::ObjectStore()
   : object_class_(Class::null()),
     object_type_(Type::null()),
     null_class_(Class::null()),
     null_type_(Type::null()),
     function_type_(Type::null()),
     function_impl_type_(Type::null()),
-    library_prefix_class_(Class::null()),
-    type_class_(Class::null()),
     number_type_(Type::null()),
     int_type_(Type::null()),
     integer_implementation_class_(Class::null()),
     smi_class_(Class::null()),
     mint_class_(Class::null()),
     double_class_(Class::null()),
     float32x4_type_(Type::null()),
     int32x4_type_(Type::null()),
     float64x2_type_(Type::null()),
     string_type_(Type::null()),
     one_byte_string_class_(Class::null()),
     two_byte_string_class_(Class::null()),
     external_one_byte_string_class_(Class::null()),
     external_two_byte_string_class_(Class::null()),
     bool_type_(Type::null()),
     bool_class_(Class::null()),
     array_class_(Class::null()),
     array_type_(Type::null()),
     immutable_array_class_(Class::null()),
     growable_object_array_class_(Class::null()),
     linked_hash_map_class_(Class::null()),
     float32x4_class_(Class::null()),
     int32x4_class_(Class::null()),
     float64x2_class_(Class::null()),
-    typed_data_classes_(Array::null()),
     error_class_(Class::null()),
-    stacktrace_class_(Class::null()),
     weak_property_class_(Class::null()),
     symbol_table_(Array::null()),
     canonical_type_arguments_(Array::null()),
     async_library_(Library::null()),
     builtin_library_(Library::null()),
     core_library_(Library::null()),
     isolate_library_(Library::null()),
     math_library_(Library::null()),
     mirrors_library_(Library::null()),
     native_wrappers_library_(Library::null()),
@@ skipping 88 matching lines @@
       Stacktrace::Handle(Stacktrace::New(code_array, pc_offset_array));
   // Expansion of inlined functions requires additional memory at run time,
   // avoid it.
   stack_trace.set_expand_inlined(false);
   set_preallocated_stack_trace(stack_trace);
 
   return true;
 }
 
 }  // namespace dart