Grab crash handler's peak commit charge in fallback handler

components/crash/content/app/fallback_crash_handler_win.cc

 // Copyright 2017 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/crash/content/app/fallback_crash_handler_win.h"
 
 #include <dbghelp.h>
 #include <psapi.h>
 
 #include <algorithm>
 #include <map>
+#include <memory>
+#include <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/files/file.h"
 #include "base/files/file_util.h"
 #include "base/macros.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/process/process_handle.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/win/scoped_handle.h"
@@ skipping 23 matching lines @@
     // This is in units of bytes, re-scale to pages for consistency with
     // system metrics.
     const uint64_t kPageSize = 4096;
     crash_keys->insert(std::make_pair(
         "ProcessPrivateUsage",
         base::Uint64ToString(process_memory.PrivateUsage / kPageSize)));
 
     crash_keys->insert(std::make_pair(
         "ProcessPeakWorkingSetSize",
         base::Uint64ToString(process_memory.PeakWorkingSetSize / kPageSize)));
+
+    crash_keys->insert(std::make_pair(
+        "ProcessPeakPagefileUsage",
+        base::Uint64ToString(process_memory.PeakPagefileUsage / kPageSize)));
   }
 
   // Grab system commit memory. Also best effort.
   PERFORMANCE_INFORMATION perf_info = {sizeof(perf_info)};
   if (GetPerformanceInfo(&perf_info, sizeof(perf_info))) {
     // Record the remaining committable memory and the limit. This is in units
     // of system pages.
     crash_keys->insert(std::make_pair(
         "SystemCommitRemaining",
         base::UintToString(perf_info.CommitLimit - perf_info.CommitTotal)));
@@ skipping 428 matching lines @@
 
   crashpad::UUID report_id = {};
   status = database->FinishedWritingCrashReport(report, &report_id);
   if (status != crashpad::CrashReportDatabase::kNoError)
     return false;
 
   return true;
 }
 
 }  // namespace crash_reporter