Re-write many calls to WrapUnique() with MakeUnique()

sandbox/mac/bootstrap_sandbox.cc

 // 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.
 
 #include "sandbox/mac/bootstrap_sandbox.h"
 
 #include <servers/bootstrap.h>
 #include <stdint.h>
 #include <unistd.h>
 
@@ skipping 140 matching lines @@
   DCHECK(policies_.find(sandbox_policy_id) != policies_.end());
 
   uint64_t token;
   while (true) {
     token = base::RandUint64();
     if (awaiting_processes_.find(token) == awaiting_processes_.end())
       break;
   }
 
   awaiting_processes_[token] = sandbox_policy_id;
-  return base::WrapUnique(new PreExecDelegate(server_bootstrap_name_, token));
+  return base::MakeUnique<PreExecDelegate>(server_bootstrap_name_, token);
 }
 
 void BootstrapSandbox::RevokeToken(uint64_t token) {
   base::AutoLock lock(lock_);
   const auto& it = awaiting_processes_.find(token);
   if (it != awaiting_processes_.end())
     awaiting_processes_.erase(it);
 }
 
 void BootstrapSandbox::InvalidateClient(base::ProcessHandle handle) {
@@ skipping 82 matching lines @@
   } else {
     {
       base::AutoLock lock(lock_);
       sandboxed_processes_.erase(client_pid);
     }
     MACH_LOG(ERROR, kr) << "HandleChildCheckIn mach_msg MACH_SEND_MSG";
   }
 }
 
 }  // namespace sandbox