Replace guava with java 8 primitives
package com.thoughtworks.selenium.webdriven;
import com.google.common.annotations.VisibleForTesting;
-import com.google.common.base.Supplier;
import com.google.common.collect.Maps;
import com.thoughtworks.selenium.CommandProcessor;
import org.openqa.selenium.internal.WrapsDriver;
import java.util.Map;
+import java.util.function.Supplier;
/**
