Add network throttling as an enterprise policy

chrome/browser/chromeos/net/network_throttling_observer.cc

+// Copyright 2014 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/chromeos/net/network_throttling_observer.h"
+
+#include <memory>
+#include <string>
+
+#include "base/macros.h"
+#include "base/memory/ptr_util.h"
+#include "base/sys_info.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/pref_names.h"
+#include "chromeos/login/login_state.h"
+#include "chromeos/network/device_state.h"
+#include "chromeos/network/network_state_handler.h"
+#include "components/prefs/pref_registry_simple.h"
+
+namespace chromeos {
+
+namespace {
+
+// Weak pointer.  This class is owned by ChromeBrowserMainPartsChromeos.
+NetworkThrottlingObserver* g_network_throttling_observer = NULL;
+
+}  // namespace
+
+namespace network_throttling_observer {
+
+void RegisterPrefs(PrefRegistrySimple* registry) {
+  registry->RegisterDictionaryPref(prefs::kNetworkThrottlingEnabled);
+}
+}
+
+NetworkThrottlingObserver::NetworkThrottlingObserver()
+    : weak_ptr_factory_(this) {
+  // TODO(kirtika): Running on ChromeOS and user not logged in requirement
+  // borrowed from wake_on_wifi_manager - check if it is really needed here.
+  CHECK(!base::SysInfo::IsRunningOnChromeOS() ||
+        !LoginState::Get()->IsUserLoggedIn());
+  DCHECK(!g_network_throttling_observer);
+
+  g_network_throttling_observer = this;
+}
+
+NetworkThrottlingObserver::~NetworkThrottlingObserver() {
+  DCHECK(g_network_throttling_observer);
+  g_network_throttling_observer = NULL;
+}
+
+// static
+NetworkThrottlingObserver* NetworkThrottlingObserver::Get() {
+  DCHECK(g_network_throttling_observer);
+  return g_network_throttling_observer;
+}
+
+void NetworkThrottlingObserver::OnPreferenceChanged(
+    bool throttling_enabled,
+    uint32_t upload_rate_kbits,
+    uint32_t download_rate_kbits) {
+  NetworkHandler::Get()->network_state_handler()->SetNetworkThrottlingStatus(
+      throttling_enabled, upload_rate_kbits, download_rate_kbits);
+}
+
+}  // namespace chromeos