Change high usage detector logic

Based on the requirement, change it to detect:
"whether battery draining is larger than x in the last y hours"

Bug: 70570352
Test: RunSettingsRoboTests
Change-Id: I9fb1a9f2fe38d5d64681dafe26311aeab7f3fe9c

src/com/android/settings/fuelgauge/BatteryInfo.java

@@ -272,7 +272,7 @@ public class BatteryInfo {
         void onParsingDone();
     }
 
-    private static void parse(BatteryStats stats, BatteryDataParser... parsers) {
+    public static void parse(BatteryStats stats, BatteryDataParser... parsers) {
         long startWalltime = 0;
         long endWalltime = 0;
         long historyStart = 0;