Convert double interface into abstract class

runtime/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 61 matching lines @@
     integer_implementation_class_ = value.raw();
   }
 
   RawClass* smi_class() const { return smi_class_; }
   void set_smi_class(const Class& value) { smi_class_ = value.raw(); }
 
   RawType* smi_type() const { return smi_type_; }
   void set_smi_type(const Type& value) { smi_type_ = value.raw();
   }
 
-  RawType* double_interface() const { return double_interface_; }
-  void set_double_interface(const Type& value) {
-    double_interface_ = value.raw();
-  }
-
   RawClass* double_class() const { return double_class_; }
   void set_double_class(const Class& value) { double_class_ = value.raw(); }
 
   RawType* double_type() const { return double_type_; }
   void set_double_type(const Type& value) { double_type_ = value.raw(); }
 
   RawClass* mint_class() const { return mint_class_; }
   void set_mint_class(const Class& value) { mint_class_ = value.raw(); }
 
   RawType* mint_type() const { return mint_type_; }
@@ skipping 376 matching lines @@
   RawType* void_type_;
   RawType* function_type_;
   RawType* number_type_;
   RawType* int_interface_;
   RawClass* integer_implementation_class_;
   RawClass* smi_class_;
   RawType* smi_type_;
   RawClass* mint_class_;
   RawType* mint_type_;
   RawClass* bigint_class_;
-  RawType* double_interface_;
   RawClass* double_class_;
   RawType* double_type_;
   RawType* string_interface_;
   RawClass* one_byte_string_class_;
   RawClass* two_byte_string_class_;
   RawClass* four_byte_string_class_;
   RawClass* external_one_byte_string_class_;
   RawClass* external_two_byte_string_class_;
   RawClass* external_four_byte_string_class_;
   RawType* bool_type_;
@@ skipping 49 matching lines @@
   RawObject** to() { return reinterpret_cast<RawObject**>(&keyword_symbols_); }
 
   friend class SnapshotReader;
 
   DISALLOW_COPY_AND_ASSIGN(ObjectStore);
 };
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_STORE_H_