Finalize package intents used to trigger tz update

        // The intent filter that triggers when package update events happen that indicate there may

        // be work to do.

        IntentFilter packageIntentFilter = new IntentFilter();

        // Either of these mean a downgrade?

        packageIntentFilter.addAction(Intent.ACTION_PACKAGE_CHANGED);

        packageIntentFilter.addAction(Intent.ACTION_PACKAGE_REPLACED);

        packageIntentFilter.addDataScheme("package");

        packageIntentFilter.addDataSchemeSpecificPart(

                updaterAppPackageName, PatternMatcher.PATTERN_LITERAL);

        packageIntentFilter.addDataSchemeSpecificPart(

                dataAppPackageName, PatternMatcher.PATTERN_LITERAL);

        // ACTION_PACKAGE_ADDED is fired when a package is upgraded or downgraded (in addition to

        // ACTION_PACKAGE_REMOVED and ACTION_PACKAGE_REPLACED). A system/priv-app can never be

        // removed entirely so we do not need to trigger on ACTION_PACKAGE_REMOVED or

        // ACTION_PACKAGE_FULLY_REMOVED.

        packageIntentFilter.addAction(Intent.ACTION_PACKAGE_ADDED);

        // ACTION_PACKAGE_CHANGED is used when a package is disabled / re-enabled. It is not

        // strictly necessary to trigger on this but it won't hurt anything and may catch some cases

        // where a package has changed while disabled.

        // Note: ACTION_PACKAGE_CHANGED is not fired when updating a suspended app, but

        // ACTION_PACKAGE_ADDED, ACTION_PACKAGE_REMOVED and ACTION_PACKAGE_REPLACED are (and the app

        // is left in an unsuspended state after this).

        packageIntentFilter.addAction(Intent.ACTION_PACKAGE_CHANGED);

        // We do not register for ACTION_PACKAGE_RESTARTED because it doesn't imply an update.

        // We do not register for ACTION_PACKAGE_DATA_CLEARED because the updater / data apps are

        // not expected to need local data.

        Receiver packageUpdateReceiver = new Receiver(listener, true /* packageUpdated */);

        mContext.registerReceiver(packageUpdateReceiver, packageIntentFilter);

        // TODO(nfuller): Add more exotic intents as needed. e.g.

        // packageIntentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);

        // Also, disabled...?

        mReliabilityReceiver = new Receiver(listener, false /* packageUpdated */);

    }