[kernel] Cache patch-classes.

runtime/vm/kernel_reader.h

 // Copyright (c) 2016, 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.
 
 #ifndef RUNTIME_VM_KERNEL_READER_H_
 #define RUNTIME_VM_KERNEL_READER_H_
 
 #if !defined(DART_PRECOMPILED_RUNTIME)
 #include <map>
 
@@ skipping 118 matching lines @@
 
   dart::RawFunction::Kind GetFunctionType(
       Procedure::ProcedureKind procedure_kind);
 
   Program* program_;
 
   dart::Thread* thread_;
   dart::Zone* zone_;
   dart::Isolate* isolate_;
   Array& scripts_;
+  Array& patch_classes_;
   ActiveClass active_class_;
   BuildingTranslationHelper translation_helper_;
   StreamingFlowGraphBuilder builder_;
 
   Mapping<dart::Library> libraries_;
   Mapping<dart::Class> classes_;
 
   GrowableArray<const dart::Function*> functions_;
   GrowableArray<const dart::Field*> fields_;
 };
 
 }  // namespace kernel
 }  // namespace dart
 
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)
 #endif  // RUNTIME_VM_KERNEL_READER_H_