Things we need to identify in order to proceed with this work:
1.Any and all bugs in bugzilla.mozilla.org that refer to removed/changed functionality (a few have been linked already but there are no doubt more that haven't been found yet)
2.Any changes to public header files (the ones in microb-engine-dev on Maemo) that break the ABI in ways that affect us (figuring out if a change affects us will rely on reverse engineering the closed plugins and we can figure out what has changed by looking at the commit history for the header files in question). If the Maemo version of a header file says an interface is "frozen" I think we can assume its not going to be incompatible in the latest Gecko (after all, thats the point of "frozen" status for an interface)
and 3.Which of the local patches actually get used when compiling the Fremantle binaries using the same configs Nokia used and of those patches, which ones matter for us (we especially need to see if any such patches change the public header files)

For item #1 we need someone who knows their way around bugzilla.mozilla.org and can find all those bugs.
For item #2 we need someone who knows how to program npapi and Gecko APIs.
And for item #3, we need someone who knows their way around the Gecko codebase and knows how to read/understand patches.