Don't access owning pointers after they've relinquished ownership.

components/search_engines/util.cc

 // 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.
 
 #include "components/search_engines/util.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 182 matching lines @@
   DCHECK(prepopulated_urls);
   DCHECK(template_urls);
 
   ActionsFromPrepopulateData actions(CreateActionsFromCurrentPrepopulateData(
       prepopulated_urls, *template_urls, default_search_provider));
 
   // Remove items.
   for (const auto* removed_engine : actions.removed_engines) {
     auto j = FindTemplateURL(template_urls, removed_engine);
     DCHECK(j != template_urls->end());
-    std::unique_ptr<TemplateURL> template_url = std::move(*j);
     DCHECK(!default_search_provider ||
            (*j)->prepopulate_id() != default_search_provider->prepopulate_id());
+    std::unique_ptr<TemplateURL> template_url = std::move(*j);
     template_urls->erase(j);
     if (service) {
       service->RemoveKeyword(template_url->id());
       if (removed_keyword_guids)
         removed_keyword_guids->insert(template_url->sync_guid());
     }
   }
 
   // Edit items.
   for (const auto& edited_engine : actions.edited_engines) {
@@ skipping 153 matching lines @@
 }
 
 TemplateURLService::OwnedTemplateURLVector::iterator FindTemplateURL(
     TemplateURLService::OwnedTemplateURLVector* urls,
     const TemplateURL* url) {
   return std::find_if(urls->begin(), urls->end(),
                       [url](const std::unique_ptr<TemplateURL>& ptr) {
                         return ptr.get() == url;
                       });
 }