Revert change 19074 until the windows build is fixed.

runtime/vm/raw_object_snapshot.cc

Index: runtime/vm/raw_object_snapshot.cc
===================================================================
--- runtime/vm/raw_object_snapshot.cc	(revision 19080)
+++ runtime/vm/raw_object_snapshot.cc	(working copy)
@@ -2387,24 +2387,7 @@
                                     intptr_t object_id,
                                     intptr_t tags,
                                     Snapshot::Kind kind) {
-  if (kind == Snapshot::kFull) {
-    Stacktrace& result = Stacktrace::ZoneHandle(reader->isolate(),
-                                                reader->NewStacktrace());
-    reader->AddBackRef(object_id, &result, kIsDeserialized);
-
-    // There are no non object pointer fields.
-
-    // Read all the object pointer fields.
-    Array& array = Array::Handle(reader->isolate());
-    array ^= reader->ReadObjectRef();
-    result.set_function_array(array);
-    array ^= reader->ReadObjectRef();
-    result.set_code_array(array);
-    array ^= reader->ReadObjectRef();
-    result.set_pc_offset_array(array);
-    return result.raw();
-  }
-  UNREACHABLE();  // Stacktraces are not sent in a snapshot.
+  UNIMPLEMENTED();
   return Stacktrace::null();
 }
 
@@ -2412,26 +2395,7 @@
 void RawStacktrace::WriteTo(SnapshotWriter* writer,
                             intptr_t object_id,
                             Snapshot::Kind kind) {
-  if (kind == Snapshot::kFull) {
-    ASSERT(writer != NULL);
-    ASSERT(this == Isolate::Current()->object_store()->
-           preallocated_stack_trace());
-
-    // Write out the serialization header value for this object.
-    writer->WriteInlinedObjectHeader(object_id);
-
-    // Write out the class and tags information.
-    writer->WriteIndexedObject(kStacktraceCid);
-    writer->WriteIntptrValue(writer->GetObjectTags(this));
-
-    // There are no non object pointer fields.
-
-    // Write out all the object pointer fields.
-    SnapshotWriterVisitor visitor(writer);
-    visitor.VisitPointers(from(), to());
-  } else {
-    UNREACHABLE();  // Stacktraces are not supported for other snapshot forms.
-  }
+  UNIMPLEMENTED();
 }