Added a UI for the Interests Prototype.

chrome/android/java/src/org/chromium/chrome/browser/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.browser;
 
 /**
  * Contains all of the command line switches that are specific to the chrome/
  * portion of Chromium on Android.
  */
@@ skipping 81 matching lines @@
     /**
      * Disable Lo-Fi snackbar.
      */
     public static final String DISABLE_LOFI_SNACKBAR = "disable-lo-fi-snackbar";
 
     /**
      * Enable content snippets on the NTP
      */
     public static final String ENABLE_NTP_SNIPPETS = "enable-ntp-snippets";
 
+    /**
+     * Enable content snippets on the NTP
+     */
+    public static final String ENABLE_NTP_INTERESTS = "enable-ntp-interests";

[newt (away), 2015/12/12 00:30:30]

You could remove "ntp" from this flag. --enable-interests seems fine and easier
to type.

[PEConn, 2015/12/14 17:05:14]

Done.

+
     ///////////////////////////////////////////////////////////////////////////////////////////////
     // Native Switches
     ///////////////////////////////////////////////////////////////////////////////////////////////
 
     /**
      * Enable enhanced bookmarks feature.
      * Native switch - switches::kEnhancedBookmarksExperiment
      */
     public static final String ENABLE_ENHANCED_BOOKMARKS = "enhanced-bookmarks-experiment";
 
@@ skipping 85 matching lines @@
     /**
      * Disables Web Notification custom layouts.
      * Native switch - switches::kDisableWebNotificationCustomLayouts
      */
     public static final String DISABLE_WEB_NOTIFICATION_CUSTOM_LAYOUTS =
             "disable-web-notification-custom-layouts";
 
     // Prevent instantiation.
     private ChromeSwitches() {}
 }