Much of the removed code seems unnecessary since the same functionality can be accomplished with much simpler code. An example is provided with ClassForNamePlugin.java (temporary.) A shipping byte code optimizer plugin will be supplied later. Additional changes to the plugin API will supply a cross resource resolver that will make byte code optimizing code even simpler.
http://cr.openjdk.java.net/~jlaskey/8160829/webrev/index.html https://bugs.openjdk.java.net/browse/JDK-8160829