chromeos: Move system resume handling to power manager client

chrome/browser/chromeos/dbus/power_manager_client.h

Index: chrome/browser/chromeos/dbus/power_manager_client.h
diff --git a/chrome/browser/chromeos/dbus/power_manager_client.h b/chrome/browser/chromeos/dbus/power_manager_client.h
index bec0cea3225b5cbe851bf9689bfd27196ead245f..43f58a40ec92ae3e693e19462e6e6d05244b9186 100644
--- a/chrome/browser/chromeos/dbus/power_manager_client.h
+++ b/chrome/browser/chromeos/dbus/power_manager_client.h
@@ -51,6 +51,9 @@ class PowerManagerClient {
     // Called when power supply polling takes place.  |status| is a data
     // structure that contains the current state of the power supply.
     virtual void PowerChanged(const PowerSupplyStatus& status) {}
+
+    // Called when the system resumes from suspend.
+    virtual void SystemResumed() {}
   };
 
   // Adds and removes the observer.