New Task Manager - Phase 1.1: Implement Browser Process Task Providing

chrome/browser/task_management/providers/task.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 "chrome/browser/task_management/providers/task.h"
+
+namespace task_management {
+
+// ----------------------------------------------------------------------
+// Public Members:
+// ----------------------------------------------------------------------
+
+Task::Task(const base::string16& title,
+           const gfx::ImageSkia& icon,
+           base::ProcessHandle handle)
+    : task_id_(last_id_++),
+      network_usage_(0),
+      current_byte_count_(0),
+      title_(title),
+      icon_(icon),
+      process_handle_(handle),
+      is_first_in_group_(true) {
+}
+
+Task::~Task() {
+}
+
+base::string16 Task::GetProfileName() const {
+  return base::string16();
+}
+
+int Task::GetRoutingID() const {
+  return 0;
+}
+
+size_t Task::GetSqliteMemoryUsed() const {
+  return -1U;
+}
+
+size_t Task::GetV8MemoryAllocated() const {
+  return -1U;
+}
+
+size_t Task::GetV8MemoryUsed() const {
+  return -1U;
+}
+
+bool Task::ReportsWebCacheStats() const {
+  return false;
+}
+
+blink::WebCache::ResourceTypeStats Task::GetWebCacheStats() const {
+  return blink::WebCache::ResourceTypeStats();
+}
+
+void Task::Refresh(const base::TimeDelta& update_duration) {
+  // TODO(afakhry): Add code here to skip this when network usage refresh has
+  // never been requested.
+
+  int64 update_time_secs = update_duration.InSeconds();
+  DCHECK(update_time_secs != 0);
+  network_usage_ = current_byte_count_ / update_time_secs;
+
+  // Reset the current byte count for this task.
+  current_byte_count_ = 0;
+}
+
+void Task::OnBytesRead(int64 bytes_read) {
+  current_byte_count_ += bytes_read;
+}
+
+// ----------------------------------------------------------------------
+// Private Members:
+// ----------------------------------------------------------------------
+
+// static
+int64 Task::last_id_ = 0;
+
+}  // namespace task_management