Merge "Don't remove effects on session 0"

        sp<PlaybackThread> t = mPlaybackThreads.valueAt(i);

        for (size_t j = 0; j < t->mEffectChains.size(); j++) {

            sp<EffectChain> ec = t->mEffectChains[j];

            if (ec->sessionId() > AUDIO_SESSION_OUTPUT_MIX) {

                chains.push(ec);

            }

        }

    }

    for (size_t i = 0; i < mRecordThreads.size(); i++) {

        sp<RecordThread> t = mRecordThreads.valueAt(i);

        for (size_t j = 0; j < t->mEffectChains.size(); j++) {