Add get-disabled shell command to locksettings

Added shell command that outputs whether the lock screen is disabled.

Test: Ran "adb shell locksettings get-disabled" while phone had lock
screen and when it did not.

Change-Id: I3532e41e2ee4770bd0801dd431fdbc884c2bafa4
diff --git a/services/core/java/com/android/server/locksettings/LockSettingsShellCommand.java b/services/core/java/com/android/server/locksettings/LockSettingsShellCommand.java
index d39679d..4d2cf32 100644
--- a/services/core/java/com/android/server/locksettings/LockSettingsShellCommand.java
+++ b/services/core/java/com/android/server/locksettings/LockSettingsShellCommand.java
@@ -37,6 +37,7 @@
     private static final String COMMAND_SP = "sp";
     private static final String COMMAND_SET_DISABLED = "set-disabled";
     private static final String COMMAND_VERIFY = "verify";
+    private static final String COMMAND_GET_DISABLED = "get-disabled";
 
     private int mCurrentUserId;
     private final LockPatternUtils mLockPatternUtils;
@@ -80,6 +81,9 @@
                 case COMMAND_VERIFY:
                     runVerify();
                     break;
+                case COMMAND_GET_DISABLED:
+                    runGetDisabled();
+                    break;
                 default:
                     getErrPrintWriter().println("Unknown command: " + cmd);
                     break;
@@ -156,6 +160,11 @@
         getOutPrintWriter().println("Lock screen disabled set to " + disabled);
     }
 
+    private void runGetDisabled() {
+        boolean isLockScreenDisabled = mLockPatternUtils.isLockScreenDisabled(mCurrentUserId);
+        getOutPrintWriter().println(isLockScreenDisabled);
+    }
+
     private boolean checkCredential() throws RemoteException {
         final boolean havePassword = mLockPatternUtils.isLockPasswordEnabled(mCurrentUserId);
         final boolean havePattern = mLockPatternUtils.isLockPatternEnabled(mCurrentUserId);