[Webview, Child Accounts] Automatically sign in to Chrome if needed.

chrome/android/java/src/org/chromium/chrome/browser/init/ProcessInitializationHandler.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.init;
 
 import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.view.View;
@@ skipping 188 matching lines @@
     /**
      * Performs the deferred startup task initialization.
      */
     protected void handleDeferredStartupTasksInitialization() {
         final ChromeApplication application =
                 (ChromeApplication) ContextUtils.getApplicationContext();
 
         DeferredStartupHandler.getInstance().addDeferredTask(new Runnable() {
             @Override
             public void run() {
-                ForcedSigninProcessor.start(application);
+                ForcedSigninProcessor.start(application, null);
                 AccountsChangedReceiver.addObserver(
                         new AccountsChangedReceiver.AccountsChangedObserver() {
                             @Override
                             public void onAccountsChanged(Context context, Intent intent) {
                                 ThreadUtils.runOnUiThread(new Runnable() {
                                     @Override
                                     public void run() {
-                                        ForcedSigninProcessor.start(application);
+                                        ForcedSigninProcessor.start(application, null);
                                     }
                                 });
                             }
                         });
             }
         });
 
         DeferredStartupHandler.getInstance().addDeferredTask(new Runnable() {
             @Override
             public void run() {
@@ skipping 31 matching lines @@
         });
 
         DeferredStartupHandler.getInstance().addDeferredTask(new Runnable() {
             @Override
             public void run() {
                 ChromeWebApkHost.initCanUseGooglePlayToInstallWebApk();
             }
         });
     }
 }