Convert //sync from scoped_ptr to std::unique_ptr

sync/internal_api/public/util/proto_value_ptr_unittest.cc

 // 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.
 
 #include "sync/internal_api/public/util/proto_value_ptr.h"
 
+#include <memory>
 #include <utility>
 
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer {
 
 namespace {
 
 // Simple test struct that wraps an integer
 struct IntValue {
  public:
   explicit IntValue(int value) { value_ = value; }
@@ skipping 71 matching lines @@
     static TestValue default_instance;
     default_instance.is_default_ = true;
     return default_instance;
   }
 
  private:
   static int g_copy_count;
   static int g_parse_count;
   static int g_delete_count;
 
-  scoped_ptr<IntValue> value_;
+  std::unique_ptr<IntValue> value_;
   bool is_default_;
 
   DISALLOW_COPY_AND_ASSIGN(TestValue);
 };
 
 // Static initializers.
 int TestValue::g_copy_count = 0;
 int TestValue::g_parse_count = 0;
 int TestValue::g_delete_count = 0;
 
@@ skipping 126 matching lines @@
     EXPECT_EQ(1, TestValue::parse_count());
     EXPECT_EQ(0, TestValue::copy_count());
 
     EXPECT_EQ(v1, ptr1->value());
   }
 
   EXPECT_EQ(1, TestValue::delete_count());
 }
 
 }  // namespace syncer