Return unique_ptrs from base::ProcessMetrics.

base/process/process_metrics_openbsd.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/macros.h"
 #include "base/process/process_metrics.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <sys/param.h>
 #include <sys/sysctl.h>
 
+#include "base/macros.h"
+#include "base/memory/ptr_util.h"
+#include "base/sys_info.h"
+
 namespace base {
 
 // static
-ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) {
-  return new ProcessMetrics(process);
+std::unique_ptr<ProcessMetrics> ProcessMetrics::CreateProcessMetrics(
+    ProcessHandle process) {
+  return WrapUnique(new ProcessMetrics(process));
 }
 
 size_t ProcessMetrics::GetPagefileUsage() const {
   struct kinfo_proc info;
   size_t length;
   int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_,
                 sizeof(struct kinfo_proc), 0 };
 
   if (sysctl(mib, arraysize(mib), NULL, &length, NULL, 0) < 0)
     return -1;
@@ skipping 101 matching lines @@
   last_cpu_time_ = time;
   last_cpu_ = cpu;
 
   double percentage = static_cast<double>((cpu * 100.0) / FSCALE);
 
   return percentage;
 }
 
 ProcessMetrics::ProcessMetrics(ProcessHandle process)
     : process_(process),
+      processor_count_(SysInfo::NumberOfProcessors()),
       last_system_time_(0),
-      last_cpu_(0) {
-
-  processor_count_ = base::SysInfo::NumberOfProcessors();
-}
+      last_cpu_(0) {}
 
 size_t GetSystemCommitCharge() {
   int mib[] = { CTL_VM, VM_METER };
   int pagesize;
   struct vmtotal vmtotal;
   unsigned long mem_total, mem_free, mem_inactive;
   size_t len = sizeof(vmtotal);
 
   if (sysctl(mib, arraysize(mib), &vmtotal, &len, NULL, 0) < 0)
     return 0;
 
   mem_total = vmtotal.t_vm;
   mem_free = vmtotal.t_free;
   mem_inactive = vmtotal.t_vm - vmtotal.t_avm;
 
   pagesize = getpagesize();
 
   return mem_total - (mem_free*pagesize) - (mem_inactive*pagesize);
 }
 
 }  // namespace base