Return unique_ptrs from base::ProcessMetrics.

base/process/process_metrics_ios.cc

 // Copyright (c) 2013 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 "base/process/process_metrics.h"
 
 #include <limits.h>
 #include <mach/task.h>
 #include <stddef.h>
 
 #include "base/logging.h"
+#include "base/memory/ptr_util.h"
 
 namespace base {
 
 namespace {
 
 bool GetTaskInfo(task_basic_info_64* task_info_data) {
   mach_msg_type_number_t count = TASK_BASIC_INFO_64_COUNT;
   kern_return_t kr = task_info(mach_task_self(),
                                TASK_BASIC_INFO_64,
                                reinterpret_cast<task_info_t>(task_info_data),
                                &count);
   return kr == KERN_SUCCESS;
 }
 
 }  // namespace
 
-SystemMemoryInfoKB::SystemMemoryInfoKB() {
-  total = 0;
-  free = 0;
-}
+SystemMemoryInfoKB::SystemMemoryInfoKB() : total(0), free(0) {}
 
 SystemMemoryInfoKB::SystemMemoryInfoKB(const SystemMemoryInfoKB& other) =
     default;
 
 ProcessMetrics::ProcessMetrics(ProcessHandle process) {}
 
 ProcessMetrics::~ProcessMetrics() {}
 
 // static
-ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) {
-  return new ProcessMetrics(process);
+std::unique_ptr<ProcessMetrics> ProcessMetrics::CreateProcessMetrics(
+    ProcessHandle process) {
+  return WrapUnique(new ProcessMetrics(process));
 }
 
 double ProcessMetrics::GetCPUUsage() {
   NOTIMPLEMENTED();
   return 0;
 }
 
 size_t ProcessMetrics::GetPagefileUsage() const {
   task_basic_info_64 task_info_data;
   if (!GetTaskInfo(&task_info_data))
@@ skipping 40 matching lines @@
 }
 
 // Bytes committed by the system.
 bool GetSystemMemoryInfo(SystemMemoryInfoKB* meminfo) {
   // Unimplemented. Must enable unittest for IOS when this gets implemented.
   NOTIMPLEMENTED();
   return false;
 }
 
 }  // namespace base