Merge "Update all preferences when the account preference updates UI" into tm-qpr-dev am: 6e14ff02e8

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/19192851

Change-Id: I832dcbc2fa78a81f9d64169d80cdc5a9aed5df4d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

tests/robotests/src/com/android/settings/dashboard/DashboardFragmentTest.java

@@ -297,6 +297,14 @@ public class DashboardFragmentTest {
         mTestFragment.updatePreferenceVisibility(prefControllers);
     }
 
+    @Test
+    public void forceUpdatePreferences_prefKeyNull_shouldNotCrash() {
+        mTestFragment.addPreferenceController(new TestPreferenceController(mContext));
+
+        // Should not crash
+        mTestFragment.forceUpdatePreferences();
+    }
+
     @Test
     public void checkUiBlocker_noUiBlocker_controllerIsNull() {
         mTestFragment.mBlockerController = null;