Fill in PlatformPrivateFootprint on Linux

components/tracing/common/process_metrics_memory_dump_provider.cc

 // 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 "components/tracing/common/process_metrics_memory_dump_provider.h"
 
 #include <fcntl.h>
 #include <stdint.h>
 
 #include <map>
@@ skipping 615 matching lines @@
 #endif  // defined(OS_MACOSX)
   if (rss_bytes_for_testing)
     rss_bytes = rss_bytes_for_testing;
 
   // rss_bytes will be 0 if the process ended while dumping.
   if (!rss_bytes)
     return false;
 
   uint64_t peak_rss_bytes = 0;
 
+#if defined(OS_LINUX)

[hjd, 2017/04/26 14:24:15]

I need to try this out on the other two platforms to check it works.

+  base::trace_event::ProcessMemoryTotals::PlatformPrivateFootprint& footprint =
+      pmd->process_totals()->GetPlatformPrivateFootprint();
+  footprint.rss_anon_bytes = process_metrics_->GetRssAnonBytes();
+  footprint.vm_swap_bytes = process_metrics_->GetVmSwapBytes();
+#endif  // defined(OS_LINUX)
+
 #if !defined(OS_IOS)
   peak_rss_bytes = process_metrics_->GetPeakWorkingSetSize();
 #if defined(OS_LINUX) || defined(OS_ANDROID)
   if (is_rss_peak_resettable_) {
     std::string clear_refs_file =
         "/proc/" +
         (process_ == base::kNullProcessId ? "self"
                                           : base::IntToString(process_)) +
         "/clear_refs";
     int clear_refs_fd = open(clear_refs_file.c_str(), O_WRONLY);
@@ skipping 60 matching lines @@
 #endif
 }
 
 void ProcessMetricsMemoryDumpProvider::SuspendFastMemoryPolling() {
 #if defined(OS_LINUX) || defined(OS_ANDROID)
   fast_polling_statm_fd_.reset();
 #endif
 }
 
 }  // namespace tracing