base::ListValue::Append cleanup: pass unique_ptr instead of the released pointer.

components/invalidation/impl/unacked_invalidation_set_test_util.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/invalidation/impl/unacked_invalidation_set_test_util.h"
 
 #include <memory>
 
 #include "base/json/json_string_value_serializer.h"
 #include "base/macros.h"
@@ skipping 142 matching lines @@
   serializer.set_pretty_print(true);
   serializer.Serialize(*value.get());
 
   (*os) << output;
 }
 
 void PrintTo(const UnackedInvalidationsMap& map, ::std::ostream* os) {
   std::unique_ptr<base::ListValue> list(new base::ListValue);
   for (UnackedInvalidationsMap::const_iterator it = map.begin();
        it != map.end(); ++it) {
-    list->Append(it->second.ToValue().release());
+    list->Append(it->second.ToValue());
   }
 
   std::string output;
   JSONStringValueSerializer serializer(&output);
   serializer.set_pretty_print(true);
   serializer.Serialize(*list.get());
 
   (*os) << output;
 }
 
 Matcher<const UnackedInvalidationSet&> Eq(
     const UnackedInvalidationSet& expected) {
   return MakeMatcher(new UnackedInvalidationSetEqMatcher(expected));
 }
 
 Matcher<const UnackedInvalidationsMap&> Eq(
     const UnackedInvalidationsMap& expected) {
   return MakeMatcher(new UnackedInvalidationsMapEqMatcher(expected));
 }
 
 }  // namespace test_util
 
 };