Add support for child accounts on Android.

chrome/android/java/src/org/chromium/chrome/ChromeSwitches.java

 // Copyright 2014 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;
 
 /**
  * Contains all of the command line switches that are specific to the chrome/
  * portion of Chromium on Android.
  */
 public abstract class ChromeSwitches {
     // Switches used from Java.  Please continue switch style used Chrome where
     // options-have-hypens and are_not_split_with_underscores.
 
+    /** Testing: pretend that the switch value is the name of a child account. */
+    public static final String CHILD_ACCOUNT = "child-account";
+
     // Disables the new Website Settings dialog, which replaces the old one.
     // TODO(sashab): Once the new WebsiteSettingsPopup is ready to be permanent,
     // remove this flag and delete WebsiteSettingsLegacyPopup and all it's
     // dependencies.
     public static final String DISABLE_NEW_WEBSITE_SETTINGS = "disable-new-website-settings";
 
     /** Mimic a low end device */
     public static final String ENABLE_ACCESSIBILITY_TAB_SWITCHER =
             "enable-accessibility-tab-switcher";
 
@@ skipping 95 matching lines @@
 
     /**
      * Use sandbox Wallet environment for requestAutocomplete.
      * Native switch - autofill::switches::kWalletServiceUseSandbox.
      */
     public static final String USE_SANDBOX_WALLET_ENVIRONMENT = "wallet-service-use-sandbox";
 
     // Prevent instantiation.
     private ChromeSwitches() {}
 }