Convert //sandbox to use std::unique_ptr

sandbox/linux/seccomp-bpf/bpf_tests_unittest.cc

Index: sandbox/linux/seccomp-bpf/bpf_tests_unittest.cc
diff --git a/sandbox/linux/seccomp-bpf/bpf_tests_unittest.cc b/sandbox/linux/seccomp-bpf/bpf_tests_unittest.cc
index e300baf9ba2907b511ced2b767daa421072ef0bf..c16cd72dd895d3fdf7340ded44bcbbeb311e1371 100644
--- a/sandbox/linux/seccomp-bpf/bpf_tests_unittest.cc
+++ b/sandbox/linux/seccomp-bpf/bpf_tests_unittest.cc
@@ -10,9 +10,10 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#include <memory>
+
 #include "base/logging.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "build/build_config.h"
 #include "sandbox/linux/bpf_dsl/bpf_dsl.h"
 #include "sandbox/linux/bpf_dsl/policy.h"
@@ -76,7 +77,7 @@ TEST(BPFTest, BPFTesterCompatibilityDelegateLeakTest) {
   }
   {
     // Test polymorphism.
-    scoped_ptr<BPFTesterDelegate> simple_delegate(
+    std::unique_ptr<BPFTesterDelegate> simple_delegate(
         new BPFTesterCompatibilityDelegate<EmptyClassTakingPolicy, FourtyTwo>(
             DummyTestFunction));
   }
@@ -113,8 +114,8 @@ class BasicBPFTesterDelegate : public BPFTesterDelegate {
   BasicBPFTesterDelegate() {}
   ~BasicBPFTesterDelegate() override {}
 
-  scoped_ptr<bpf_dsl::Policy> GetSandboxBPFPolicy() override {
-    return scoped_ptr<bpf_dsl::Policy>(new EnosysPtracePolicy());
+  std::unique_ptr<bpf_dsl::Policy> GetSandboxBPFPolicy() override {
+    return std::unique_ptr<bpf_dsl::Policy>(new EnosysPtracePolicy());
   }
   void RunTestFunction() override {
     errno = 0;