Fix backup for users hit by erroneous backup disabling

BUG=31754835

Change-Id: I89dd08b7958dd8fe20d70bc50f2c89996ae46cc5
diff --git a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
index c2ffa9b..11d9fb8 100644
--- a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
+++ b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
@@ -496,6 +496,12 @@
                     }
                 });
             }
+            // STOPSHIP: Remove this code once all dogfood devices are fixed. See b/31754835
+            if (Intent.ACTION_BOOT_COMPLETED.equals(action) && !mOwners.hasDeviceOwner()
+                    && !isBackupServiceEnabledInternal()) {
+                setBackupServiceEnabledInternal(true);
+                Slog.w(LOG_TAG, "Fix backup for device that is not in Device Owner mode.");
+            }
             if (Intent.ACTION_USER_UNLOCKED.equals(action)
                     || Intent.ACTION_USER_STARTED.equals(action)
                     || KeyChain.ACTION_STORAGE_CHANGED.equals(action)) {
@@ -9317,12 +9323,15 @@
         }
         synchronized (this) {
             getActiveAdminForCallerLocked(admin, DeviceAdminInfo.USES_POLICY_DEVICE_OWNER);
-            try {
-                IBackupManager ibm = mInjector.getIBackupManager();
-                return ibm != null && ibm.isBackupServiceActive(UserHandle.USER_SYSTEM);
-            } catch (RemoteException e) {
-                throw new IllegalStateException("Failed requesting backup service state.", e);
-            }
+            return isBackupServiceEnabledInternal();
+        }
+    }
+    private boolean isBackupServiceEnabledInternal() {
+        try {
+            IBackupManager ibm = mInjector.getIBackupManager();
+            return ibm != null && ibm.isBackupServiceActive(UserHandle.USER_SYSTEM);
+        } catch (RemoteException e) {
+            throw new IllegalStateException("Failed requesting backup service state.", e);
         }
     }
 }