chromeos: Update more code to get signals from powerd.

chrome/browser/chromeos/net/network_change_notifier_network_library.h

Index: chrome/browser/chromeos/net/network_change_notifier_network_library.h
diff --git a/chrome/browser/chromeos/net/network_change_notifier_network_library.h b/chrome/browser/chromeos/net/network_change_notifier_network_library.h
index 16d8aa4bd5ae2942fcaf26ce1a3cdece6fb1045d..d75fa875a2c72dd6f7b4add101e8a495e495c511 100644
--- a/chrome/browser/chromeos/net/network_change_notifier_network_library.h
+++ b/chrome/browser/chromeos/net/network_change_notifier_network_library.h
@@ -11,6 +11,7 @@
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/cros/network_library.h"
+#include "chromeos/dbus/power_manager_client.h"
 #include "chromeos/dbus/root_power_manager_observer.h"
 #include "net/base/network_change_notifier.h"
 
@@ -20,6 +21,7 @@ class OnlineStatusReportThreadTask;
 
 class NetworkChangeNotifierNetworkLibrary
     : public net::NetworkChangeNotifier,
+      public chromeos::PowerManagerClient::Observer,
       public chromeos::RootPowerManagerObserver,
       public chromeos::NetworkLibrary::NetworkObserver,
       public chromeos::NetworkLibrary::NetworkManagerObserver {
@@ -40,7 +42,11 @@ class NetworkChangeNotifierNetworkLibrary
 
   class DnsConfigServiceChromeos;
 
+  // PowerManagerClient::Observer overrides:
+  virtual void SystemResumed(const base::TimeDelta& sleep_duration) OVERRIDE;
+
   // RootPowerManagerObserver overrides:
+  // TODO(derat): Remove this once notifications are sent by powerd.
   virtual void OnResume(const base::TimeDelta& sleep_duration) OVERRIDE;
 
   // NetworkChangeNotifier overrides: