Do not show any search engine promos if disabled by policy.

chrome/android/java/src/org/chromium/chrome/browser/locale/LocaleManager.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.locale;
 
 import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
@@ skipping 226 matching lines @@
             public void run() {
                 handleSearchEnginePromoWithTemplateUrlsLoaded(activity, onSearchEngineFinalized);
             }
         });
     }
 
     private void handleSearchEnginePromoWithTemplateUrlsLoaded(
             final Activity activity, final @Nullable Callback<Boolean> onSearchEngineFinalized) {
         assert TemplateUrlService.getInstance().isLoaded();
 
+        if (TemplateUrlService.getInstance().isDefaultSearchManaged()) {
+            if (onSearchEngineFinalized != null) onSearchEngineFinalized.onResult(true);
+            return;
+        }
+
         final int shouldShow = getSearchEnginePromoShowType();
         Callable<PromoDialog> dialogCreator;
         switch (shouldShow) {
             case SEARCH_ENGINE_PROMO_DONT_SHOW:
                 if (onSearchEngineFinalized != null) onSearchEngineFinalized.onResult(true);
                 return;
             case SEARCH_ENGINE_PROMO_SHOW_SOGOU:
                 dialogCreator = new Callable<PromoDialog>() {
                     @Override
                     public PromoDialog call() throws Exception {
@@ skipping 206 matching lines @@
      * Record any locale based metrics related with search. Recorded per search.
      * @param isFromSearchWidget Whether the search was performed from the search widget.
      * @param url Url for the search made.
      * @param transition The transition type for the navigation.
      */
     public void recordLocaleBasedSearchMetrics(
             boolean isFromSearchWidget, String url, @PageTransition int transition) {}
 
     private static native int nativeGetEngineType(String url);
 }