Googletest export

Add missing `is_gtest_matcher` to the polymorphic matcher example.

PiperOrigin-RevId: 353881883
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Abseil Team 2021-01-26 12:25:25 -05:00 committed by CJ Johnson
parent 8a7618672a
commit 273f8cb059

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@ -3627,6 +3627,8 @@ as adding templates in the right place.
class NotNullMatcher {
public:
using is_gtest_matcher = void;
// To implement a polymorphic matcher, we just need to make MatchAndExplain a
// template on its first argument.