Don't include ICData::owner_ in precompiled snapshots.

runtime/vm/object.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/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 11669 matching lines @@
 
 
 void ICData::SetOriginal(const ICData& value) const {
   ASSERT(value.IsOriginal());
   ASSERT(!value.IsNull());
   StorePointer(&raw_ptr()->owner_, reinterpret_cast<RawObject*>(value.raw()));
 }
 
 
 void ICData::set_owner(const Function& value) const {
-  ASSERT(!value.IsNull());
   StorePointer(&raw_ptr()->owner_, reinterpret_cast<RawObject*>(value.raw()));
 }
 
 
 void ICData::set_target_name(const String& value) const {
   ASSERT(!value.IsNull());
   StorePointer(&raw_ptr()->target_name_, value.raw());
 }
 
 
@@ skipping 9728 matching lines @@
   return UserTag::null();
 }
 
 
 const char* UserTag::ToCString() const {
   const String& tag_label = String::Handle(label());
   return tag_label.ToCString();
 }
 
 }  // namespace dart