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diff --git a/third_party/abseil_cpp/absl/random/internal/mock_helpers.h b/third_party/abseil_cpp/absl/random/internal/mock_helpers.h
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index 9af27ab3a2..0000000000
--- a/third_party/abseil_cpp/absl/random/internal/mock_helpers.h
+++ /dev/null
@@ -1,127 +0,0 @@
-//
-// Copyright 2019 The Abseil Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#ifndef ABSL_RANDOM_INTERNAL_MOCK_HELPERS_H_
-#define ABSL_RANDOM_INTERNAL_MOCK_HELPERS_H_
-
-#include <tuple>
-#include <type_traits>
-
-#include "absl/base/internal/fast_type_id.h"
-#include "absl/types/optional.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-namespace random_internal {
-
-// MockHelpers works in conjunction with MockOverloadSet, MockingBitGen, and
-// BitGenRef to enable the mocking capability for absl distribution functions.
-//
-// MockingBitGen registers mocks based on the typeid of a mock signature, KeyT,
-// which is used to generate a unique id.
-//
-// KeyT is a signature of the form:
-//   result_type(discriminator_type, std::tuple<args...>)
-// The mocked function signature will be composed from KeyT as:
-//   result_type(args...)
-//
-class MockHelpers {
-  using IdType = ::absl::base_internal::FastTypeIdType;
-
-  // Given a key signature type used to index the mock, extract the components.
-  // KeyT is expected to have the form:
-  //   result_type(discriminator_type, arg_tuple_type)
-  template <typename KeyT>
-  struct KeySignature;
-
-  template <typename ResultT, typename DiscriminatorT, typename ArgTupleT>
-  struct KeySignature<ResultT(DiscriminatorT, ArgTupleT)> {
-    using result_type = ResultT;
-    using discriminator_type = DiscriminatorT;
-    using arg_tuple_type = ArgTupleT;
-  };
-
-  // Detector for InvokeMock.
-  template <class T>
-  using invoke_mock_t = decltype(std::declval<T*>()->InvokeMock(
-      std::declval<IdType>(), std::declval<void*>(), std::declval<void*>()));
-
-  // Empty implementation of InvokeMock.
-  template <typename KeyT, typename ReturnT, typename ArgTupleT, typename URBG,
-            typename... Args>
-  static absl::optional<ReturnT> InvokeMockImpl(char, URBG*, Args&&...) {
-    return absl::nullopt;
-  }
-
-  // Non-empty implementation of InvokeMock.
-  template <typename KeyT, typename ReturnT, typename ArgTupleT, typename URBG,
-            typename = invoke_mock_t<URBG>, typename... Args>
-  static absl::optional<ReturnT> InvokeMockImpl(int, URBG* urbg,
-                                                Args&&... args) {
-    ArgTupleT arg_tuple(std::forward<Args>(args)...);
-    ReturnT result;
-    if (urbg->InvokeMock(::absl::base_internal::FastTypeId<KeyT>(), &arg_tuple,
-                         &result)) {
-      return result;
-    }
-    return absl::nullopt;
-  }
-
- public:
-  // Invoke a mock for the KeyT (may or may not be a signature).
-  //
-  // KeyT is used to generate a typeid-based lookup key for the mock.
-  // KeyT is a signature of the form:
-  //   result_type(discriminator_type, std::tuple<args...>)
-  // The mocked function signature will be composed from KeyT as:
-  //   result_type(args...)
-  //
-  // An instance of arg_tuple_type must be constructable from Args..., since
-  // the underlying mechanism requires a pointer to an argument tuple.
-  template <typename KeyT, typename URBG, typename... Args>
-  static auto MaybeInvokeMock(URBG* urbg, Args&&... args)
-      -> absl::optional<typename KeySignature<KeyT>::result_type> {
-    // Use function overloading to dispatch to the implemenation since
-    // more modern patterns (e.g. require + constexpr) are not supported in all
-    // compiler configurations.
-    return InvokeMockImpl<KeyT, typename KeySignature<KeyT>::result_type,
-                          typename KeySignature<KeyT>::arg_tuple_type, URBG>(
-        0, urbg, std::forward<Args>(args)...);
-  }
-
-  // Acquire a mock for the KeyT (may or may not be a signature).
-  //
-  // KeyT is used to generate a typeid-based lookup for the mock.
-  // KeyT is a signature of the form:
-  //   result_type(discriminator_type, std::tuple<args...>)
-  // The mocked function signature will be composed from KeyT as:
-  //   result_type(args...)
-  template <typename KeyT, typename MockURBG>
-  static auto MockFor(MockURBG& m) -> decltype(
-      std::declval<MockURBG>()
-          .template RegisterMock<typename KeySignature<KeyT>::result_type,
-                                 typename KeySignature<KeyT>::arg_tuple_type>(
-              std::declval<IdType>())) {
-    return m.template RegisterMock<typename KeySignature<KeyT>::result_type,
-                                   typename KeySignature<KeyT>::arg_tuple_type>(
-        ::absl::base_internal::FastTypeId<KeyT>());
-  }
-};
-
-}  // namespace random_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-#endif  // ABSL_RANDOM_INTERNAL_MOCK_HELPERS_H_