Update from https://crrev.com/318214

base/trace_event/process_memory_dump.h

 // 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.
 
 #ifndef BASE_TRACE_EVENT_PROCESS_MEMORY_DUMP_H_
 #define BASE_TRACE_EVENT_PROCESS_MEMORY_DUMP_H_
 
 #include "base/base_export.h"
+#include "base/trace_event/process_memory_maps.h"
 #include "base/trace_event/process_memory_totals.h"
 
 namespace base {
 namespace trace_event {
 
 class ConvertableToTraceFormat;
 
 // ProcessMemoryDump is as a strongly typed container which enforces the data
 // model for each memory dump point and holds the dumps produced by the
 // MemoryDumpProvider(s) for a specific process.
 // At trace generation time (i.e. when AsValue() is called), ProcessMemoryDump
 // will compose a key-value dictionary of the various dumps obtained at trace
 // dump point time.
 class BASE_EXPORT ProcessMemoryDump {
  public:
   ProcessMemoryDump();
   ~ProcessMemoryDump();
 
   // Called at trace generation time to populate the TracedValue.
   void AsValueInto(TracedValue* value) const;
 
   ProcessMemoryTotals* process_totals() { return &process_totals_; }
   bool has_process_totals() const { return has_process_totals_; }
   void set_has_process_totals() { has_process_totals_ = true; }
 
+  ProcessMemoryMaps* process_mmaps() { return &process_mmaps_; }
+  bool has_process_mmaps() const { return has_process_mmaps_; }
+  void set_has_process_mmaps() { has_process_mmaps_ = true; }
+
  private:
   ProcessMemoryTotals process_totals_;
   bool has_process_totals_;
 
+  ProcessMemoryMaps process_mmaps_;
+  bool has_process_mmaps_;
+
   DISALLOW_COPY_AND_ASSIGN(ProcessMemoryDump);
 };
 
 }  // namespace trace_event
 }  // namespace base
 
 #endif  // BASE_TRACE_EVENT_PROCESS_MEMORY_DUMP_H_