memory-infra: Reland: Fill the memory dump callback result (2/2)

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 <stddef.h>
 
 #include <unordered_map>
@@ skipping 149 matching lines @@
   // |other| will be an empty ProcessMemoryDump after this method returns.
   // This is to allow dump providers to pre-populate ProcessMemoryDump instances
   // and later move their contents into the ProcessMemoryDump passed as argument
   // of the MemoryDumpProvider::OnMemoryDump(ProcessMemoryDump*) callback.
   void TakeAllDumpsFrom(ProcessMemoryDump* other);
 
   // Called at trace generation time to populate the TracedValue.
   void AsValueInto(TracedValue* value) const;
 
   ProcessMemoryTotals* process_totals() { return &process_totals_; }
+  const ProcessMemoryTotals* process_totals() const { 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; }
 
   const HeapDumpsMap& heap_dumps() const { return heap_dumps_; }
 
   const MemoryDumpArgs& dump_args() const { return dump_args_; }
@@ skipping 33 matching lines @@
   // background mode are disabled for testing.
   static bool is_black_hole_non_fatal_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(ProcessMemoryDump);
 };
 
 }  // namespace trace_event
 }  // namespace base
 
 #endif  // BASE_TRACE_EVENT_PROCESS_MEMORY_DUMP_H_