| Index: components/invalidation/public/single_object_invalidation_set.cc | 
| diff --git a/components/invalidation/public/single_object_invalidation_set.cc b/components/invalidation/public/single_object_invalidation_set.cc | 
| index 6fa26c831e78c5ec5773aa1ddfaf8ca547e5309d..c1393b17f3230b74e6511462c9abf0d080ef86ad 100644 | 
| --- a/components/invalidation/public/single_object_invalidation_set.cc | 
| +++ b/components/invalidation/public/single_object_invalidation_set.cc | 
| @@ -11,6 +11,9 @@ namespace syncer { | 
|  | 
| SingleObjectInvalidationSet::SingleObjectInvalidationSet() {} | 
|  | 
| +SingleObjectInvalidationSet::SingleObjectInvalidationSet( | 
| +    const SingleObjectInvalidationSet& other) = default; | 
| + | 
| SingleObjectInvalidationSet::~SingleObjectInvalidationSet() {} | 
|  | 
| void SingleObjectInvalidationSet::Insert(const Invalidation& invalidation) { | 
|  |