Add local variable declaration token position to service protocol

runtime/vm/raw_object_snapshot.cc

 // 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.
 
 #include "vm/native_entry.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/snapshot.h"
 #include "vm/stub_code.h"
 #include "vm/symbols.h"
@@ skipping 1467 matching lines @@
   bool is_implicit = reader->Read<bool>();
   if (is_implicit) {
     ContextScope& context_scope = ContextScope::ZoneHandle(reader->zone());
     context_scope = ContextScope::New(1, true);
     reader->AddBackRef(object_id, &context_scope, kIsDeserialized);
 
     *reader->TypeHandle() ^= reader->ReadObjectImpl(kAsInlinedObject);
 
     // Create a descriptor for 'this' variable.
     context_scope.SetTokenIndexAt(0, TokenPosition::kMinSource);
+    context_scope.SetDeclarationTokenIndexAt(0, TokenPosition::kMinSource);
     context_scope.SetNameAt(0, Symbols::This());
     context_scope.SetIsFinalAt(0, true);
     context_scope.SetIsConstAt(0, false);
     context_scope.SetTypeAt(0, *reader->TypeHandle());
     context_scope.SetContextIndexAt(0, 0);
     context_scope.SetContextLevelAt(0, 0);
     return context_scope.raw();
   }
   UNREACHABLE();
   return NULL;
@@ skipping 1575 matching lines @@
     // We do not allow objects with native fields in an isolate message.
     writer->SetWriteException(Exceptions::kArgument,
                               "Illegal argument in isolate message"
                               " : (object is a UserTag)");
   } else {
     UNREACHABLE();
   }
 }
 
 }  // namespace dart