Merge "Cache the build serial instead of querying every time."

    final boolean mPermissionReviewRequired;

    private static String sTheRealBuildSerial = Build.UNKNOWN;

    /**

     * Current global configuration information. Contains general settings for the entire system,

     * also corresponds to the merged configuration of the default display.

            // We deprecated Build.SERIAL and it is not accessible to

            // apps that target the v2 security sandbox. Since access to

            // the serial is now behind a permission we push down the value.

            String buildSerial = Build.UNKNOWN;

            if (appInfo.targetSandboxVersion != 2) {

                buildSerial = IDeviceIdentifiersPolicyService.Stub.asInterface(

                        ServiceManager.getService(Context.DEVICE_IDENTIFIERS_SERVICE))

                        .getSerial();

            }

            String buildSerial = appInfo.targetSandboxVersion < 2

                    ? sTheRealBuildSerial : Build.UNKNOWN;

            // Check if this is a secondary process that should be incorporated into some

            // currently active instrumentation.  (Note we do this AFTER all of the profiling

            mSystemReady = true;

        }

        try {

            sTheRealBuildSerial = IDeviceIdentifiersPolicyService.Stub.asInterface(

                    ServiceManager.getService(Context.DEVICE_IDENTIFIERS_SERVICE))

                    .getSerial();

        } catch (RemoteException e) {}

        ArrayList<ProcessRecord> procsToKill = null;

        synchronized(mPidsSelfLocked) {

            for (int i=mPidsSelfLocked.size()-1; i>=0; i--) {