memory-infra: Plumb platform_private_footprint to service

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 653 matching lines @@
       pmd->set_has_process_mmaps();
     }
   }
 
 #endif
 #endif  // !defined(OS_IOS)
 
   pmd->process_totals()->set_resident_set_bytes(rss_bytes);
   pmd->set_has_process_totals();
   pmd->process_totals()->set_peak_resident_set_bytes(peak_rss_bytes);
+  LOG(ERROR) << "! setting rss " << rss_bytes;

[Primiano Tucci (use gerrit), 2017/04/28 15:32:26]

LOG(ERROR) << "! I don't think you mean to land this line!" :P

 
   // Returns true even if other metrics failed, since rss is reported.
   return true;
 }
 
 void ProcessMetricsMemoryDumpProvider::PollFastMemoryTotal(
     uint64_t* memory_total) {
   *memory_total = 0;
 #if defined(OS_LINUX) || defined(OS_ANDROID)
   int statm_fd = fast_polling_statm_fd_for_testing;
@@ skipping 22 matching lines @@
 #endif
 }
 
 void ProcessMetricsMemoryDumpProvider::SuspendFastMemoryPolling() {
 #if defined(OS_LINUX) || defined(OS_ANDROID)
   fast_polling_statm_fd_.reset();
 #endif
 }
 
 }  // namespace tracing