Return unique_ptrs from base::ProcessMetrics.

components/memory_pressure/direct_memory_pressure_calculator_win.cc

 // Copyright 2015 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 "components/memory_pressure/direct_memory_pressure_calculator_win.h"
 
+#include "base/logging.h"
+#include "base/process/process_metrics.h"
+
 namespace memory_pressure {
 
 #if defined(MEMORY_PRESSURE_IS_POLLING)
 
 namespace {
 
-static const int kKBperMB = 1024;
+const int kKBperMB = 1024;
 
 }  // namespace
 
 // A system is considered 'high memory' if it has more than 1.5GB of system
 // memory available for use by the memory manager (not reserved for hardware
 // and drivers). This is a fuzzy version of the ~2GB discussed below.
 const int DirectMemoryPressureCalculator::kLargeMemoryThresholdMb = 1536;
 
 // These are the default thresholds used for systems with < ~2GB of physical
 // memory. Such systems have been observed to always maintain ~100MB of
@@ skipping 80 matching lines @@
     critical_threshold_mb_ = kLargeMemoryDefaultCriticalThresholdMb;
   } else {
     moderate_threshold_mb_ = kSmallMemoryDefaultModerateThresholdMb;
     critical_threshold_mb_ = kSmallMemoryDefaultCriticalThresholdMb;
   }
 }
 
 #endif  // defined(MEMORY_PRESSURE_IS_POLLING)
 
 }  // namespace memory_pressure