Extract guts of ChromeStabilityMetricsProvider into helper class

chrome/browser/memory/system_memory_stats_recorder_win.cc

Index: chrome/browser/memory/system_memory_stats_recorder_win.cc
diff --git a/chrome/browser/memory/system_memory_stats_recorder_win.cc b/chrome/browser/memory/system_memory_stats_recorder_win.cc
deleted file mode 100644
index b90949869883e60f0579298ed4f865978aa95a07..0000000000000000000000000000000000000000
--- a/chrome/browser/memory/system_memory_stats_recorder_win.cc
+++ /dev/null
@@ -1,44 +0,0 @@
-// 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 "chrome/browser/memory/system_memory_stats_recorder.h"
-
-#include <windows.h>
-
-#include "base/metrics/histogram_macros.h"
-#include "base/process/process_metrics.h"
-
-namespace memory {
-
-void RecordMemoryStats(RecordMemoryStatsType type) {
-  MEMORYSTATUSEX mem_status;
-  mem_status.dwLength = sizeof(mem_status);
-  if (!::GlobalMemoryStatusEx(&mem_status))
-    return;
-
-  switch (type) {
-    case RECORD_MEMORY_STATS_TAB_DISCARDED: {
-      UMA_HISTOGRAM_CUSTOM_COUNTS("Memory.Stats.Win.MemoryLoad",
-                                  mem_status.dwMemoryLoad, 0, 100, 101);
-      UMA_HISTOGRAM_LARGE_MEMORY_MB("Memory.Stats.Win.TotalPhys",
-                                    mem_status.ullTotalPhys);
-      UMA_HISTOGRAM_LARGE_MEMORY_MB("Memory.Stats.Win.AvailPhys",
-                                    mem_status.ullAvailPhys);
-      UMA_HISTOGRAM_LARGE_MEMORY_MB("Memory.Stats.Win.TotalPageFile",
-                                    mem_status.ullTotalPageFile);
-      UMA_HISTOGRAM_LARGE_MEMORY_MB("Memory.Stats.Win.AvailPageFile",
-                                    mem_status.ullAvailPageFile);
-      UMA_HISTOGRAM_LARGE_MEMORY_MB("Memory.Stats.Win.TotalVirtual",
-                                    mem_status.ullTotalVirtual);
-      UMA_HISTOGRAM_LARGE_MEMORY_MB("Memory.Stats.Win.AvailVirtual",
-                                    mem_status.ullAvailVirtual);
-      break;
-    }
-    default:
-      NOTREACHED() << L"Received unexpected notification";
-      break;
-  }
-}
-
-}  // namespace memory