Fixed SystemAccountManagerDelegate.updateCredentials on KitKat

components/signin/core/browser/android/java/src/org/chromium/components/signin/SystemAccountManagerDelegate.java

Index: components/signin/core/browser/android/java/src/org/chromium/components/signin/SystemAccountManagerDelegate.java
diff --git a/components/signin/core/browser/android/java/src/org/chromium/components/signin/SystemAccountManagerDelegate.java b/components/signin/core/browser/android/java/src/org/chromium/components/signin/SystemAccountManagerDelegate.java
index 1f27097c1f1297f8058ec91fb10aa9433ced9998..6cc91e8c3a598fb0061c99b921481f71e47c17a0 100644
--- a/components/signin/core/browser/android/java/src/org/chromium/components/signin/SystemAccountManagerDelegate.java
+++ b/components/signin/core/browser/android/java/src/org/chromium/components/signin/SystemAccountManagerDelegate.java
@@ -193,7 +193,10 @@ public class SystemAccountManagerDelegate implements AccountManagerDelegate {
                 }
             }
         };
-        mAccountManager.updateCredentials(account, "android", null, activity, realCallback, null);
+        // Android 4.4 throws NullPointerException if null is passed
+        Bundle emptyOptions = new Bundle();
+        mAccountManager.updateCredentials(
+                account, "android", emptyOptions, activity, realCallback, null);
     }
 
     protected boolean hasGetAccountsPermission() {