Convert //sync from scoped_ptr to std::unique_ptr

sync/test/mock_invalidation.h

 // Copyright 2014 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 SYNC_TEST_MOCK_INVALIDATION_H_
 #define SYNC_TEST_MOCK_INVALIDATION_H_
 
 #include <stdint.h>
 
+#include <memory>
 #include <string>
 
-#include "base/memory/scoped_ptr.h"
 #include "sync/internal_api/public/base/invalidation_interface.h"
 
 namespace syncer {
 
 // An InvalidationInterface used by sync for testing.
 // It does not support any form of acknowledgements.
 class MockInvalidation : public InvalidationInterface {
  public:
   // Helpers to build new MockInvalidations.
-  static scoped_ptr<MockInvalidation> BuildUnknownVersion();
-  static scoped_ptr<MockInvalidation> Build(int64_t version,
-                                            const std::string& payload);
+  static std::unique_ptr<MockInvalidation> BuildUnknownVersion();
+  static std::unique_ptr<MockInvalidation> Build(int64_t version,
+                                                 const std::string& payload);
 
   ~MockInvalidation() override;
 
   // Implementation of InvalidationInterface.
   bool IsUnknownVersion() const override;
   const std::string& GetPayload() const override;
   int64_t GetVersion() const override;
   void Acknowledge() override;
   void Drop() override;
 
  protected:
   MockInvalidation(bool is_unknown_version,
                    int64_t version,
                    const std::string& payload);
 
   // Whether or not this is an 'unknown version' invalidation.
   const bool is_unknown_version_;
 
   // The version of this invalidation.  Valid only if !is_unknown_version_.
   const int64_t version_;
 
   // The payload of this invalidation.  Valid only if !is_unknown_version_.
   const std::string payload_;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_TEST_MOCK_INVALIDATION_H_