Report utility process JS memory in task manager.

chrome/browser/process_resource_usage.cc

Index: chrome/browser/process_resource_usage.cc
diff --git a/chrome/browser/process_resource_usage.cc b/chrome/browser/process_resource_usage.cc
new file mode 100644
index 0000000000000000000000000000000000000000..beb0a5215c6173bbcb751416fa22c70d574ff81f
--- /dev/null
+++ b/chrome/browser/process_resource_usage.cc
@@ -0,0 +1,52 @@
+// 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 "chrome/browser/process_resource_usage.h"
+
+#include "base/bind.h"
+#include "base/logging.h"
+
+ProcessResourceUsage::ProcessResourceUsage(ResourceUsageReporterPtr service)
+    : service_(service.Pass()), update_in_progress_(false) {
+}
+
+ProcessResourceUsage::~ProcessResourceUsage() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+}
+
+void ProcessResourceUsage::Refresh() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  if (!update_in_progress_ && service_) {
+    update_in_progress_ = true;
+    service_->GetUsageData(base::Bind(&ProcessResourceUsage::OnRefreshDone,
+                                      base::Unretained(this)));
+  }
+}
+
+void ProcessResourceUsage::OnRefreshDone(ResourceUsageDataPtr data) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  update_in_progress_ = false;
+  stats_ = data.Pass();
+}
+
+bool ProcessResourceUsage::ReportsV8MemoryStats() const {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  if (stats_)
+    return stats_->reports_v8_stats;
+  return false;
+}
+
+size_t ProcessResourceUsage::GetV8MemoryAllocated() const {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  if (stats_ && stats_->reports_v8_stats)
+    return stats_->v8_memory_allocated;
+  return 0;
+}
+
+size_t ProcessResourceUsage::GetV8MemoryUsed() const {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  if (stats_ && stats_->reports_v8_stats)
+    return stats_->v8_memory_used;
+  return 0;
+}