So that files outside this dir can also reference it without conflict.
--HG--
rename : dom/plugins/test/mochitest/utils.js => dom/plugins/test/mochitest/plugin-utils.js
extra : source : 136f6591826350948f2e342da1600a983b4bcd76
This patch has a few side effects:
1. Plugins in the chrome process are "mirrored" to all content processes,
although this mirroring is currently imperfect (bug 1090576)
2. Plugins are no longer sorted by modification date in nsPluginHost.
3. Plugin exceptions are no longer propagated to JS code. They are ignored.