Gentle start with removing explicit interfaces

runtime/vm/raw_object.h

 // 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.
 
 #ifndef VM_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/globals.h"
 #include "vm/token.h"
@@ skipping 72 matching lines @@
       V(ExternalUint16Array)                                                   \
       V(ExternalInt32Array)                                                    \
       V(ExternalUint32Array)                                                   \
       V(ExternalInt64Array)                                                    \
       V(ExternalUint64Array)                                                   \
       V(ExternalFloat32Array)                                                  \
       V(ExternalFloat64Array)                                                  \
     V(Stacktrace)                                                              \
     V(JSRegExp)                                                                \
     V(WeakProperty)                                                            \
+    V(DartFunction)                                                            \
     V(Closure)                                                                 \
 
 #define CLASS_LIST(V)                                                          \
   V(Object)                                                                    \
   CLASS_LIST_NO_OBJECT(V)
 
 
 // Forward declarations.
 class Isolate;
 #define DEFINE_FORWARD_DECLARATION(clazz)                                      \
@@ skipping 1275 matching lines @@
 };
 
 
 class RawExternalFloat64Array : public RawByteArray {
   RAW_HEAP_OBJECT_IMPLEMENTATION(ExternalFloat64Array);
 
   ExternalByteArrayData<double>* external_data_;
 };
 
 
+class RawDartFunction : public RawInstance {
+  RAW_HEAP_OBJECT_IMPLEMENTATION(DartFunction);
+};
+
+
 class RawClosure : public RawInstance {
   RAW_HEAP_OBJECT_IMPLEMENTATION(Closure);
 
   RawObject** from() {
     return reinterpret_cast<RawObject**>(&ptr()->type_arguments_);
   }
   RawAbstractTypeArguments* type_arguments_;
   RawFunction* function_;
   RawContext* context_;
   // TODO(iposva): Remove this temporary hack.
@@ skipping 176 matching lines @@
          kExternalUint64ArrayCid == kByteArrayCid + 18 &&
          kExternalFloat32ArrayCid == kByteArrayCid + 19 &&
          kExternalFloat64ArrayCid == kByteArrayCid + 20 &&
          kStacktraceCid == kByteArrayCid + 21);
   return (index >= kByteArrayCid && index <= kExternalFloat64ArrayCid);
 }
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_