Merge "Get vsync period for ADPF CPU hints in SF using display mode"

    // Save this once per commit + composite to ensure consistency

    mPowerHintSessionEnabled = mPowerAdvisor->usePowerHintSession();

    if (mPowerHintSessionEnabled) {

        nsecs_t vsyncPeriod;

        {

            Mutex::Autolock lock(mStateLock);

            vsyncPeriod = getVsyncPeriodFromHWC();

        }

        const auto& display = FTL_FAKE_GUARD(mStateLock, getDefaultDisplayDeviceLocked()).get();

        // get stable vsync period from display mode

        const nsecs_t vsyncPeriod = display->getActiveMode()->getVsyncPeriod();

        mPowerAdvisor->setCommitStart(frameTime);

        mPowerAdvisor->setExpectedPresentTime(mExpectedPresentTime);

        const nsecs_t idealSfWorkDuration =