Bug 999443 - Trying to reuse the same nsISimpleEnumerator for multiple plugins means that only the first plugin in an extension is marked as being in an extension. Cache the list in an array instead. r=gfritzsche

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extra : rebase_source : edaf8dcb026b2e1b8c31ff59022201120c3d2e4a
Bug 999443 test - The first plugin found in extensions was activated, but any subsequent plugins were not. r=gfritzsche

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extra : rebase_source : 05c89bce40ab4a29f092108fb7833138c3adf337