Merge "Have the Surface class track the buffer age." into oc-mr1-dev

    sp<Fence> fence;

    ::android::FrameEventHistoryDelta outTimestamps;

    status_t status = mBase->dequeueBuffer(

            &slot, &fence,

            width, height,

            static_cast<::android::PixelFormat>(format), usage,

        &slot, &fence, width, height,

        static_cast<::android::PixelFormat>(format), usage, nullptr,

        getFrameTimestamps ? &outTimestamps : nullptr);

    hidl_handle tFence;

    FrameEventHistoryDelta tOutTimestamps;