LGTM if you have verified it works with the Linux .so's in the CRX and a couple of nits.
http://gwt-code-reviews.appspot.com/1036801/diff/1/3 File plugins/npapi/manifest-template.json (right): http://gwt-code-reviews.appspot.com/1036801/diff/1/3#newcode24 plugins/npapi/manifest-template.json:24: { "path": "Darwin-gcc3/gwtDev.plugin", "public": true } Are you sure this works when the Linux .so is included? When I tried before, on the Mac it would try and load the Linux .so and fail, and never try to load the Darwin version. Is it simply having the directory with the plist file that fixes that? http://gwt-code-reviews.appspot.com/1036801/diff/1/4 File plugins/npapi/prebuilt/gwt-dev-plugin/Darwin-gcc3/gwtDev.plugin/Contents/Info.plist (right): http://gwt-code-reviews.appspot.com/1036801/diff/1/4#newcode30 plugins/npapi/prebuilt/gwt-dev-plugin/Darwin-gcc3/gwtDev.plugin/Contents/Info.plist:30: <string>Plugin to allow debugging of GWT applications in Out of Process Hosted Mode (OOPHM)</string> Should probably change this to DevMode http://gwt-code-reviews.appspot.com/1036801/diff/1/5 File plugins/npapi/prebuilt/gwt-dev-plugin/manifest.json (right): http://gwt-code-reviews.appspot.com/1036801/diff/1/5#newcode3 plugins/npapi/prebuilt/gwt-dev-plugin/manifest.json:3: "version": "9119", Shouldn't this be 1.0.9119? http://gwt-code-reviews.appspot.com/1036801/show -- http://groups.google.com/group/Google-Web-Toolkit-Contributors