Allow apps to bypass Power Save restrictions when launched from a Notification's PendingIntent.

This scenario typically happens when the device is on Doze Mode and a
notification action is triggered from a Wear device.

In a nutshell, the workflow is:

- ProcessRecord has a flag telling whether a process has "whitelist
  management" privileges.
- When NotificationManager binds a new NotificationListenerService, it
  sets the BIND_ALLOW_WHITELIST_MANAGEMENT flag.
- On bind(), ActiveService asserts that only system apps can set that
  flag.
- On computeOomAdjLocked(), ActivityManagerService sets the
  ProcessRecord flag if necessary.
- Upon creating a notification, NotificationManager calls AM to mark its
  PendingIntents as coming from a notification.
- When PendingIntentRecord sends it to the target, it checks if it's
  from a notification and if so calls AM to do the temp whitelist.
- On unbind(), ActiveService removes the ProcessRecord flag if necessary.

Fixes: 28818704

Change-Id: I00d46036a2cbb73f7f733fd35bf0b743a02807a1
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 0bc514e..f867fb0 100755
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -60,8 +60,8 @@
 import android.util.ArrayMap;
 import android.util.ArraySet;
 import android.util.Log;
-
 import android.util.MemoryIntArray;
+
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.widget.ILockSettings;
@@ -7950,6 +7950,7 @@
          * idle_factor                      (float)
          * min_time_to_alarm                (long)
          * max_temp_app_whitelist_duration  (long)
+         * notification_whitelist_duration  (long)
          * </pre>
          *
          * <p>