Make update over cellular an option for user

chromeos/dbus/fake_update_engine_client.cc

Index: chromeos/dbus/fake_update_engine_client.cc
diff --git a/chromeos/dbus/fake_update_engine_client.cc b/chromeos/dbus/fake_update_engine_client.cc
index 9e89f1ed2a9d9059fadc25a78f7653c24fb195e8..a57e87bc659787c19d7214e9bebbf5366be3fc48 100644
--- a/chromeos/dbus/fake_update_engine_client.cc
+++ b/chromeos/dbus/fake_update_engine_client.cc
@@ -93,6 +93,13 @@ void FakeUpdateEngineClient::SetUpdateOverCellularPermission(
   base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, callback);
 }
 
+void FakeUpdateEngineClient::SetUpdateOverCellularTarget(
+    const std::string& target_version,
+    int64_t target_size,
+    const SetTargetCallback& callback) {
+  // Do nothing.

[Daniel Erat, 2017/05/12 13:37:03]

nit: delete this comment. "{}" makes it clear you're doing nothing. :-P

[weidongg, 2017/05/12 16:33:16]

Done.

+}
+
 void FakeUpdateEngineClient::set_default_status(
     const UpdateEngineClient::Status& status) {
   default_status_ = status;