The Eclipse node debugger project is at http://code.google.com/p/chromedevtools/. The source code could be checked out using
1. Make the code JRE 1.5 compatible;
2. Remove their JS editor and make our JS editor open their generated .js.chromium files;
3. Make sure the breakpoint set on our JS editor is not ignored by their debug launch configuration.
The end result after this ticket is done should be that we could debug a node script using the instructions here (without the need to install additional plugins): https://github.com/joyent/node/wiki/Using-Eclipse-as-Node-Applications-Debugger.