Move base to DEPS

base/test/mock_entropy_provider.h

-// Copyright 2015 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.
-
-#ifndef BASE_TEST_MOCK_ENTROPY_PROVIDER_H_
-#define BASE_TEST_MOCK_ENTROPY_PROVIDER_H_
-
-#include "base/metrics/field_trial.h"
-
-namespace base {
-
-class MockEntropyProvider : public base::FieldTrial::EntropyProvider {
- public:
-  ~MockEntropyProvider() override;
-
-  // base::FieldTrial::EntropyProvider:
-  double GetEntropyForTrial(const std::string& trial_name,
-                            uint32 randomization_seed) const override;
-};
-
-}  // namespace base
-
-#endif  // BASE_TEST_MOCK_ENTROPY_PROVIDER_H_