This debugger is invoked by debuggee on demand.
Upon launching debugger establishes synch connection with debuggee and with Test.
Debugger gets RefTypeID of tested class, sets breakpoint inside testMethod,
waits for breakpoint, gets frames, and prints them. Then it releases debuggee.
After every relevant step, debugger send message (OK or FAIL) to Test.
See Also:org.apache.harmony.jpda.tests.jdwp.DebuggerOnDemand.OnthowDebuggerLaunchDebuggee