Return unique_ptrs from base::ProcessMetrics.

base/process/process_metrics_openbsd.cc

Index: base/process/process_metrics_openbsd.cc
diff --git a/base/process/process_metrics_openbsd.cc b/base/process/process_metrics_openbsd.cc
index 3f76cc222d9345b532c87bc8346b79961b272b48..58033aef62e75110d27978a75e21fbe2f7affbdb 100644
--- a/base/process/process_metrics_openbsd.cc
+++ b/base/process/process_metrics_openbsd.cc
@@ -2,7 +2,6 @@
 // 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>
@@ -10,11 +9,16 @@
 #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 {
@@ -136,11 +140,9 @@ double ProcessMetrics::GetCPUUsage() {
 
 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 };