[Re-land] Add network throttling as enterprise policy

chromeos/dbus/fake_shill_manager_client.h

Index: chromeos/dbus/fake_shill_manager_client.h
diff --git a/chromeos/dbus/fake_shill_manager_client.h b/chromeos/dbus/fake_shill_manager_client.h
index de476915a5a4e3972414c5ff76c843c8a72c29b3..9bda9f1e46bcbe0d2947892c63c1aa52439235b2 100644
--- a/chromeos/dbus/fake_shill_manager_client.h
+++ b/chromeos/dbus/fake_shill_manager_client.h
@@ -101,6 +101,11 @@ class CHROMEOS_EXPORT FakeShillManagerClient
   void SetupDefaultEnvironment() override;
   int GetInteractiveDelay() const override;
   void SetBestServiceToConnect(const std::string& service_path) override;
+  void SetNetworkThrottlingStatus(bool enabled,
+                                  uint32_t upload_rate_kbits,
+                                  uint32_t download_rate_kbits,
+                                  const base::Closure& callback,
+                                  const ErrorCallback& error_callback) override;
 
   // Constants used for testing.
   static const char kFakeEthernetNetworkGuid[];