Use new GsiInstallParams struct

Bug: 139402092
Test: adb shell am start-activity \
            -n com.android.dynsystem/com.android.dynsystem.VerificationActivity \
            -a android.os.image.action.START_INSTALL \
            -d file:///storage/emulated/0/Download/system.raw.gz \
            --el KEY_SYSTEM_SIZE $(du -b system.raw|cut -f1) \
            --el KEY_USERDATA_SIZE 8589934592

Change-Id: I62330ccbe3c863850b545db5e911196d22f518d7