Only log Tabs.CountAtStartup for Tabbed mode.

chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabTabPersistencePolicyTest.java

 // Copyright 2016 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.customtabs;
 
 import static android.test.MoreAsserts.assertContentsInAnyOrder;
 import static android.test.MoreAsserts.assertEmpty;
 
 import android.app.Activity;
@@ skipping 367 matching lines @@
                 return TabPersistentStore.getStateFileName("cct_testing0");
             }
 
             @Override
             public File getOrCreateStateDirectory() {
                 return new File(
                         TabPersistentStore.getOrCreateBaseStateDirectory(), "cct_tests_zor");
             }
 
             @Override
+            public void notifyStateLoaded(int tabCountAtStartup) {
+            }
+
+            @Override
             public void destroy() {
             }
 
             @Override
             public void cleanupUnusedFiles(Callback<List<String>> filesToDelete) {
             }
 
             @Override
             public void cancelCleanupInProgress() {
             }
@@ skipping 25 matching lines @@
 
         CustomTabActivity activity = new CustomTabActivity();
         ApplicationStatus.onStateChangeForTesting(activity, ActivityState.CREATED);
         TabModelSelectorImpl selector = new TabModelSelectorImpl(
                 activity, buildTestPersistencePolicy(), false);
         selector.initializeForTesting(normalTabModel, incognitoTabModel);
         ApplicationStatus.onStateChangeForTesting(activity, ActivityState.DESTROYED);
         return selector;
     }
 }