Chrome Version: 68.0.3440.106 

When upgrading protobuf to one that include move constructors
this unit test fails:

components_unittests --
gtest_filter=PersistentAvailabilityStoreTest.TestAllFilterCombinations --single-process-tests

../../components/feature_engagement/internal/persistent_availability_store_unittest.cc:248: Failure
Expected equality of these values:
  14u
    Which is: 14
  (*load_results_)[kTestFeatureFoo.name]
    Which is: 0


What steps will reproduce the problem?
1. Get new protobuf from here
https://chromium-review.googlesource.com/c/chromium/src/+/1081411

2. Build and run components_unittests 

What is the expected result?
Should get 14 on line 248 of the test.


What happens instead?
Gets 0.