Move power manager to a new package.

Change-Id: I5f5a6435e64354b7d6535e8e9a63934ba7a3f448
diff --git a/services/java/com/android/server/Watchdog.java b/services/java/com/android/server/Watchdog.java
index c239382..c5b4a07 100644
--- a/services/java/com/android/server/Watchdog.java
+++ b/services/java/com/android/server/Watchdog.java
@@ -17,6 +17,7 @@
 package com.android.server;
 
 import com.android.server.am.ActivityManagerService;
+import com.android.server.power.PowerManagerService;
 
 import android.app.AlarmManager;
 import android.app.PendingIntent;