Tab switcher theme colors no longer behind flag

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 198 matching lines @@
      * Enables the all bookmarks section in bookmark manager.
      */
     public static final String ENABLE_ALL_BOOKMARKS_VIEW = "enable-all-bookmarks-view";
 
     /**
      * Enables "Add to Home screen" to mint a WebApk.
      */
     public static final String ENABLE_WEBAPK = "enable-webapk";
 
     /**
-     * Enables theme colors in the tab switcher.
-     */
-    public static final String ENABLE_TAB_SWITCHER_THEME_COLORS =
-            "enable-tab-switcher-theme-colors";
-
-    /**
      * Forces the WebAPK runtime dex to be extracted each time that Chrome is started.
      */
     public static final String ALWAYS_EXTRACT_WEBAPK_RUNTIME_DEX_ON_STARTUP =
             "always-extract-webapk-dex-on-startup";
 
     // Prevent instantiation.
     private ChromeSwitches() {}
 }