Add memory stats for linux page cycler. On linux, we collect

base/process_util_win.cc

 // Copyright (c) 2009 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_util.h"
 
 #include <windows.h>
 #include <winternl.h>
 #include <psapi.h>
 
@@ skipping 502 matching lines @@
 
 // Returns the current working set size, in bytes.
 size_t ProcessMetrics::GetWorkingSetSize() const {
   PROCESS_MEMORY_COUNTERS pmc;
   if (GetProcessMemoryInfo(process_, &pmc, sizeof(pmc))) {
     return pmc.WorkingSetSize;
   }
   return 0;
 }
 
+// Returns the peak working set size, in bytes.
+size_t ProcessMetrics::GetPeakWorkingSetSize() const {
+  PROCESS_MEMORY_COUNTERS pmc;
+  if (GetProcessMemoryInfo(process_, &pmc, sizeof(pmc))) {
+    return pmc.PeakWorkingSetSize;
+  }
+  return 0;
+}
+
 size_t ProcessMetrics::GetPrivateBytes() const {
   // PROCESS_MEMORY_COUNTERS_EX is not supported until XP SP2.
   // GetProcessMemoryInfo() will simply fail on prior OS. So the requested
   // information is simply not available. Hence, we will return 0 on unsupported
   // OSes. Unlike most Win32 API, we don't need to initialize the "cb" member.
   PROCESS_MEMORY_COUNTERS_EX pmcx;
   if (GetProcessMemoryInfo(process_,
                           reinterpret_cast<PROCESS_MEMORY_COUNTERS*>(&pmcx),
                           sizeof(pmcx))) {
       return pmcx.PrivateUsage;
@@ skipping 224 matching lines @@
 void EnableTerminationOnHeapCorruption() {
   // Ignore the result code. Supported on XP SP3 and Vista.
   HeapSetInformation(NULL, HeapEnableTerminationOnCorruption, NULL, 0);
 }
 
 void RaiseProcessToHighPriority() {
   SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS);
 }
 
 }  // namespace base