Changes to shrink the token stream representation from two words to one word.

vm/object_store.h

 // Copyright (c) 2011, 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 VM_OBJECT_STORE_H_
 #define VM_OBJECT_STORE_H_
 
 #include "vm/object.h"
 
 namespace dart {
@@ skipping 292 matching lines @@
   RawInstance* stack_overflow() const { return stack_overflow_; }
   void set_stack_overflow(const Instance& value) {
     stack_overflow_ = value.raw();
   }
 
   RawInstance* out_of_memory() const { return out_of_memory_; }
   void set_out_of_memory(const Instance& value) {
     out_of_memory_ = value.raw();
   }
 
+  RawArray* keyword_symbols() const { return keyword_symbols_; }
+  void set_keyword_symbols(const Array& value) {
+    keyword_symbols_ = value.raw();
+  }
+  void InitKeywordTable();
+
   // Visit all object pointers.
   void VisitObjectPointers(ObjectPointerVisitor* visitor);
 
   RawClass* GetClass(int index);
   int GetClassIndex(const RawClass* raw_class);
   RawType* GetType(int index);
   int GetTypeIndex(const RawType* raw_type);
 
   // Called to initialize objects required by the vm but which invoke
   // dart code.  If an error occurs then false is returned and error
@@ skipping 45 matching lines @@
   RawLibrary* core_impl_library_;
   RawLibrary* isolate_library_;
   RawLibrary* native_wrappers_library_;
   RawLibrary* root_library_;
   RawLibrary* registered_libraries_;
   RawArray* pending_classes_;
   RawError* sticky_error_;
   RawContext* empty_context_;
   RawInstance* stack_overflow_;
   RawInstance* out_of_memory_;
-  RawObject** to() { return reinterpret_cast<RawObject**>(&out_of_memory_); }
+  RawArray* keyword_symbols_;
+  RawObject** to() { return reinterpret_cast<RawObject**>(&keyword_symbols_); }
 
   bool preallocate_objects_called_;
 
   friend class SnapshotReader;
 
   DISALLOW_COPY_AND_ASSIGN(ObjectStore);
 };
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_STORE_H_