Revert of [Android WebView] Implement support for Network Information API and enable it.

android_webview/browser/net/aw_network_change_notifier.cc

-// Copyright 2016 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 "android_webview/browser/net/aw_network_change_notifier.h"
-
-namespace android_webview {
-
-AwNetworkChangeNotifier::~AwNetworkChangeNotifier() {
-  delegate_->RemoveObserver(this);
-}
-
-net::NetworkChangeNotifier::ConnectionType
-AwNetworkChangeNotifier::GetCurrentConnectionType() const {
-  return delegate_->GetCurrentConnectionType();
-}
-
-void AwNetworkChangeNotifier::GetCurrentMaxBandwidthAndConnectionType(
-    double* max_bandwidth_mbps,
-    ConnectionType* connection_type) const {
-  delegate_->GetCurrentMaxBandwidthAndConnectionType(max_bandwidth_mbps,
-                                                     connection_type);
-}
-
-bool AwNetworkChangeNotifier::AreNetworkHandlesCurrentlySupported() const {
-  return false;
-}
-
-void AwNetworkChangeNotifier::GetCurrentConnectedNetworks(
-    NetworkChangeNotifier::NetworkList* networks) const {
-  delegate_->GetCurrentlyConnectedNetworks(networks);
-}
-
-net::NetworkChangeNotifier::ConnectionType
-AwNetworkChangeNotifier::GetCurrentNetworkConnectionType(
-    NetworkHandle network) const {
-  return delegate_->GetNetworkConnectionType(network);
-}
-
-net::NetworkChangeNotifier::NetworkHandle
-AwNetworkChangeNotifier::GetCurrentDefaultNetwork() const {
-  return delegate_->GetCurrentDefaultNetwork();
-}
-
-void AwNetworkChangeNotifier::OnConnectionTypeChanged() {}
-
-void AwNetworkChangeNotifier::OnMaxBandwidthChanged(
-    double max_bandwidth_mbps,
-    ConnectionType type) {
-  // Note that this callback is sufficient for Network Information API because
-  // it also occurs on type changes (see network_change_notifier.h).
-  NetworkChangeNotifier::NotifyObserversOfMaxBandwidthChange(max_bandwidth_mbps,
-                                                             type);
-}
-
-void AwNetworkChangeNotifier::OnNetworkConnected(NetworkHandle network) {}
-void AwNetworkChangeNotifier::OnNetworkSoonToDisconnect(
-    NetworkHandle network) {}
-void AwNetworkChangeNotifier::OnNetworkDisconnected(
-    NetworkHandle network) {}
-void AwNetworkChangeNotifier::OnNetworkMadeDefault(NetworkHandle network){}
-
-AwNetworkChangeNotifier::AwNetworkChangeNotifier(
-    net::NetworkChangeNotifierDelegateAndroid* delegate)
-    : net::NetworkChangeNotifier(DefaultNetworkChangeCalculatorParams()),
-      delegate_(delegate) {
-  delegate_->AddObserver(this);
-}
-
-// static
-net::NetworkChangeNotifier::NetworkChangeCalculatorParams
-AwNetworkChangeNotifier::DefaultNetworkChangeCalculatorParams() {
-  net::NetworkChangeNotifier::NetworkChangeCalculatorParams params;
-  // Use defaults as in network_change_notifier_android.cc
-  params.ip_address_offline_delay_ = base::TimeDelta::FromSeconds(1);
-  params.ip_address_online_delay_ = base::TimeDelta::FromSeconds(1);
-  params.connection_type_offline_delay_ = base::TimeDelta::FromSeconds(0);
-  params.connection_type_online_delay_ = base::TimeDelta::FromSeconds(0);
-  return params;
-}
-
-}  // namespace android_webview