Fix build failures in precompiled runtime

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/become.h"
@@ skipping 14614 matching lines @@
     // Stub code.
     return;
   }
   const Array& id_map = Array::Handle(inlined_id_to_function());
   const Function& root = Function::Handle(function());
   CodeSourceMapReader reader(map, id_map, root);
   reader.DumpSourcePositions(PayloadStart());
 }
 
 
+RawArray* Code::await_token_positions() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+  return Array::null();
+#else
+  return raw_ptr()->await_token_positions_;
+#endif
+}
+
 RawContext* Context::New(intptr_t num_variables, Heap::Space space) {
   ASSERT(num_variables >= 0);
   ASSERT(Object::context_class() != Class::null());
 
   if (num_variables < 0 || num_variables > kMaxElements) {
     // This should be caught before we reach here.
     FATAL1("Fatal error in Context::New: invalid num_variables %" Pd "\n",
            num_variables);
   }
   Context& result = Context::Handle();
@@ skipping 8272 matching lines @@
   return UserTag::null();
 }
 
 
 const char* UserTag::ToCString() const {
   const String& tag_label = String::Handle(label());
   return tag_label.ToCString();
 }
 
 }  // namespace dart