Revert "Pull chromium at 2c3ffb2355a27c32f45e508ef861416b820c823b"

base/trace_event/process_memory_totals_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 "base/trace_event/process_memory_totals_dump_provider.h"
-
-#include "base/process/process_metrics.h"
-#include "base/trace_event/process_memory_dump.h"
-#include "base/trace_event/process_memory_totals.h"
-
-namespace base {
-namespace trace_event {
-
-// static
-uint64 ProcessMemoryTotalsDumpProvider::rss_bytes_for_testing = 0;
-
-namespace {
-ProcessMetrics* CreateProcessMetricsForCurrentProcess() {
-#if !defined(OS_MACOSX) || defined(OS_IOS)
-  return ProcessMetrics::CreateProcessMetrics(GetCurrentProcessHandle());
-#else
-  return ProcessMetrics::CreateProcessMetrics(GetCurrentProcessHandle(), NULL);
-#endif
-}
-}  // namespace
-
-// static
-ProcessMemoryTotalsDumpProvider*
-ProcessMemoryTotalsDumpProvider::GetInstance() {
-  return Singleton<
-      ProcessMemoryTotalsDumpProvider,
-      LeakySingletonTraits<ProcessMemoryTotalsDumpProvider>>::get();
-}
-
-ProcessMemoryTotalsDumpProvider::ProcessMemoryTotalsDumpProvider()
-    : process_metrics_(CreateProcessMetricsForCurrentProcess()) {
-}
-
-ProcessMemoryTotalsDumpProvider::~ProcessMemoryTotalsDumpProvider() {
-}
-
-// Called at trace dump point time. Creates a snapshot the memory counters for
-// the current process.
-void ProcessMemoryTotalsDumpProvider::DumpInto(ProcessMemoryDump* pmd) {
-  const uint64 rss_bytes = rss_bytes_for_testing
-                               ? rss_bytes_for_testing
-                               : process_metrics_->GetWorkingSetSize();
-  pmd->process_totals()->set_resident_set_bytes(rss_bytes);
-  pmd->set_has_process_totals();
-}
-
-}  // namespace trace_event
-}  // namespace base