Convert //sandbox to use std::unique_ptr

sandbox/linux/seccomp-bpf/sandbox_bpf_test_runner.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 SANDBOX_LINUX_SECCOMP_BPF_SANDBOX_BPF_TEST_RUNNER_H_
 #define SANDBOX_LINUX_SECCOMP_BPF_SANDBOX_BPF_TEST_RUNNER_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "sandbox/linux/tests/sandbox_test_runner.h"
 
 namespace sandbox {
 namespace bpf_dsl {
 class Policy;
 }
 
 // To create a SandboxBPFTestRunner object, one needs to implement this
 // interface and pass an instance to the SandboxBPFTestRunner constructor.
 // In the child process running the test, the BPFTesterDelegate object is
 // guaranteed to not be destroyed until the child process terminates.
 class BPFTesterDelegate {
  public:
   BPFTesterDelegate() {}
   virtual ~BPFTesterDelegate() {}
 
   // This will instanciate a policy suitable for the test we want to run. It is
   // guaranteed to only be called from the child process that will run the
   // test.
-  virtual scoped_ptr<bpf_dsl::Policy> GetSandboxBPFPolicy() = 0;
+  virtual std::unique_ptr<bpf_dsl::Policy> GetSandboxBPFPolicy() = 0;
   // This will be called from a child process with the BPF sandbox turned on.
   virtual void RunTestFunction() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BPFTesterDelegate);
 };
 
 // This class implements the SandboxTestRunner interface and Run() will
 // initialize a seccomp-bpf sandbox (specified by |bpf_tester_delegate|) and
 // run a test function (via |bpf_tester_delegate|) if the current kernel
 // configuration allows it. If it can not run the test under seccomp-bpf,
 // Run() will still compile the policy which should allow to get some coverage
 // under tools such as Valgrind.
 class SandboxBPFTestRunner : public SandboxTestRunner {
  public:
   // This constructor takes ownership of the |bpf_tester_delegate| object.
-  // (It doesn't take a scoped_ptr since they make polymorphism verbose).
+  // (It doesn't take a std::unique_ptr since they make polymorphism verbose).
   explicit SandboxBPFTestRunner(BPFTesterDelegate* bpf_tester_delegate);
   ~SandboxBPFTestRunner() override;
 
   void Run() override;
 
   bool ShouldCheckForLeaks() const override;
 
  private:
-  scoped_ptr<BPFTesterDelegate> bpf_tester_delegate_;
+  std::unique_ptr<BPFTesterDelegate> bpf_tester_delegate_;
   DISALLOW_COPY_AND_ASSIGN(SandboxBPFTestRunner);
 };
 
 }  // namespace sandbox
 
 #endif  // SANDBOX_LINUX_SECCOMP_BPF_SANDBOX_BPF_TEST_RUNNER_H_