Merge "AudioPolicy: Log the construction duration to mediametrics" into tm-dev

void AudioPolicyService::onFirstRef()

{

    // Log an AudioPolicy "constructor" mediametrics event on first ref.

    // This records the time it takes to load the audio modules and devices.

    mediametrics::Defer defer([beginNs = systemTime()] {

        mediametrics::LogItem(AMEDIAMETRICS_KEY_AUDIO_POLICY)

            .set(AMEDIAMETRICS_PROP_EVENT, AMEDIAMETRICS_PROP_EVENT_VALUE_CTOR)

            .set(AMEDIAMETRICS_PROP_EXECUTIONTIMENS, (int64_t)(systemTime() - beginNs))

            .record(); });

    {

        Mutex::Autolock _l(mLock);