jarjar modifies the .class files in a jar, when using static java library dependencies we need to use the modified class files and not the ones that javac produced. If jarjar is enabled, use the prebuilt jar extractor to get the classes out of classes-jarjar.jar and export them through j.classJarSpecs. Change-Id: Ia2854f1c26d630da12cab7c421007aad4f793ecd