- Get rid of RawClosure class and use RawInstance for closures.

vm/raw_object.h

Index: vm/raw_object.h
===================================================================
--- vm/raw_object.h	(revision 13564)
+++ vm/raw_object.h	(working copy)
@@ -92,7 +92,6 @@
     V(JSRegExp)                                                                \
     V(WeakProperty)                                                            \
     V(DartFunction)                                                            \
-    V(Closure)                                                                 \
 
 #define CLASS_LIST(V)                                                          \
   V(Object)                                                                    \
@@ -1433,19 +1432,6 @@
 };
 
 
-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_;
-  RawObject** to() { return reinterpret_cast<RawObject**>(&ptr()->context_); }
-};
-
-
 // VM type for capturing stacktraces when exceptions are thrown,
 // Currently we don't have any interface that this object is supposed
 // to implement so we just support the 'toString' method which