Fixes for re-enabling more MSVC level 4 warnings: components/ edition

components/search_engines/template_url_prepopulate_data.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/template_url_prepopulate_data.h"
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 #include <locale.h>
 #endif
 
@@ skipping 1082 matching lines @@
     return t_urls.Pass();
 
   size_t num_engines = list->GetSize();
   for (size_t i = 0; i != num_engines; ++i) {
     const base::DictionaryValue* engine;
     base::string16 name;
     base::string16 keyword;
     std::string search_url;
     std::string favicon_url;
     std::string encoding;
-    int id;
+    int id = -1;
     // The following fields are required for each search engine configuration.
     if (list->GetDictionary(i, &engine) &&
         engine->GetString("name", &name) && !name.empty() &&
         engine->GetString("keyword", &keyword) && !keyword.empty() &&
         engine->GetString("search_url", &search_url) && !search_url.empty() &&
         engine->GetString("favicon_url", &favicon_url) &&
         !favicon_url.empty() &&
         engine->GetString("encoding", &encoding) && !encoding.empty() &&
         engine->GetInteger("id", &id)) {
       // These fields are optional.
@@ skipping 179 matching lines @@
     for (size_t j = 0; j < kAllEngines[i]->alternate_urls_size; ++j) {
       if (SameDomain(url, GURL(kAllEngines[i]->alternate_urls[j])))
         return kAllEngines[i]->type;
     }
   }
 
   return SEARCH_ENGINE_OTHER;
 }
 
 }  // namespace TemplateURLPrepopulateData