Fix Java PersonalDataManagerTest flake.

chrome/android/java/src/org/chromium/chrome/browser/autofill/PersonalDataManager.java

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.autofill;
 
 import android.content.Context;
 
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.VisibleForTesting;
@@ skipping 480 matching lines @@
     private void personalDataChanged() {
         ThreadUtils.assertOnUiThread();
         for (PersonalDataManagerObserver observer : mDataObservers) {
             observer.onPersonalDataChanged();
         }
     }
 
     /**
      * Registers a PersonalDataManagerObserver on the native side.
      */
-    public void registerDataObserver(PersonalDataManagerObserver observer) {
+    public boolean registerDataObserver(PersonalDataManagerObserver observer) {
         ThreadUtils.assertOnUiThread();
         assert !mDataObservers.contains(observer);
         mDataObservers.add(observer);
+        return nativeIsDataLoaded(mPersonalDataManagerAndroid);
     }
 
     /**
      * Unregisters the provided observer.
      */
     public void unregisterDataObserver(PersonalDataManagerObserver observer) {
         ThreadUtils.assertOnUiThread();
         assert (mDataObservers.size() > 0);
         assert (mDataObservers.contains(observer));
         mDataObservers.remove(observer);
@@ skipping 232 matching lines @@
 
     /**
      * Enables or disables the Payments integration.
      * @param enable True to enable Payments data import.
      */
     public static void setPaymentsIntegrationEnabled(boolean enable) {
         nativeSetPaymentsIntegrationEnabled(enable);
     }
 
     private native long nativeInit();
+    private native boolean nativeIsDataLoaded(long nativePersonalDataManagerAndroid);
     private native String[] nativeGetProfileGUIDsForSettings(long nativePersonalDataManagerAndroid);
     private native String[] nativeGetProfileGUIDsToSuggest(long nativePersonalDataManagerAndroid);
     private native String[] nativeGetProfileLabelsForSettings(
             long nativePersonalDataManagerAndroid);
     private native String[] nativeGetProfileLabelsToSuggest(long nativePersonalDataManagerAndroid,
             boolean includeName);
     private native AutofillProfile nativeGetProfileByGUID(long nativePersonalDataManagerAndroid,
             String guid);
     private native String nativeSetProfile(long nativePersonalDataManagerAndroid,
             AutofillProfile profile);
@@ skipping 37 matching lines @@
             long nativePersonalDataManagerAndroid, String guid);
     private native void nativeGetFullCardForPaymentRequest(long nativePersonalDataManagerAndroid,
             WebContents webContents, CreditCard card, FullCardRequestDelegate delegate);
     private static native boolean nativeIsAutofillEnabled();
     private static native void nativeSetAutofillEnabled(boolean enable);
     private static native boolean nativeIsAutofillManaged();
     private static native boolean nativeIsPaymentsIntegrationEnabled();
     private static native void nativeSetPaymentsIntegrationEnabled(boolean enable);
     private static native String nativeToCountryCode(String countryName);
 }