Gentle start with removing explicit interfaces

runtime/vm/raw_object_snapshot.cc

Index: runtime/vm/raw_object_snapshot.cc
===================================================================
--- runtime/vm/raw_object_snapshot.cc	(revision 11192)
+++ runtime/vm/raw_object_snapshot.cc	(working copy)
@@ -42,7 +42,7 @@
       cls = reader->NewClass(class_id, is_signature_class);
     } else {
       if (class_id < kNumPredefinedCids) {
-        ASSERT((class_id >= kInstanceCid) && (class_id <= kWeakPropertyCid));
+        ASSERT((class_id >= kInstanceCid) && (class_id <= kDartFunctionCid));
         cls = reader->isolate()->class_table()->At(class_id);
       } else {
         if (is_signature_class) {
@@ -53,7 +53,6 @@
       }
     }
     reader->AddBackRef(object_id, &cls, kIsDeserialized);
-

[regis, 2012/08/23 03:53:10]

Blank line removed by accident? Other functions have it.

[hausner, 2012/08/23 18:34:10]

Blankness restored to former glory.

     // Set the object tags.
     cls.set_tags(tags);
 
@@ -185,7 +184,6 @@
                         intptr_t tags,
                         Snapshot::Kind kind) {
   ASSERT(reader != NULL);
-

[regis, 2012/08/23 03:53:10]

ditto

[hausner, 2012/08/23 18:34:10]

Done.

   // Allocate parameterized type object.
   Type& parameterized_type = Type::ZoneHandle(
       reader->isolate(), NEW_OBJECT(Type));
@@ -1968,6 +1966,22 @@
 #undef BYTEARRAY_TYPE_LIST
 
 
+RawDartFunction* DartFunction::ReadFrom(SnapshotReader* reader,
+                                        intptr_t object_id,
+                                        intptr_t tags,
+                                        Snapshot::Kind kind) {
+  UNIMPLEMENTED();

[regis, 2012/08/23 03:53:10]

Better: UNREACHABLE();  // DartFunction is an abstract class.

[hausner, 2012/08/23 18:34:10]

Done.

+  return DartFunction::null();
+}
+
+
+void RawDartFunction::WriteTo(SnapshotWriter* writer,
+                              intptr_t object_id,
+                              Snapshot::Kind kind) {
+  UNIMPLEMENTED();

[regis, 2012/08/23 03:53:10]

ditto

[hausner, 2012/08/23 18:34:10]

Done.

+}
+
+
 RawClosure* Closure::ReadFrom(SnapshotReader* reader,
                               intptr_t object_id,
                               intptr_t tags,