Don't delay network requests for webNavigation, and re-enable the permission warning

chrome/common/extensions/extension_permission_set.cc

 // Copyright (c) 2011 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 "chrome/common/extensions/extension_permission_set.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/memory/singleton.h"
@@ skipping 253 matching lines @@
       kTab, "tabs", IDS_EXTENSION_PROMPT_WARNING_TABS,
       ExtensionPermissionMessage::kTabs, kFlagSupportsOptional,
       kTypeDefault - kTypePlatformApp);
   info->RegisterPermission(
       kTts, "tts", 0,
       ExtensionPermissionMessage::kNone, kFlagNone, kTypeDefault);
   info->RegisterPermission(
       kTtsEngine, "ttsEngine", IDS_EXTENSION_PROMPT_WARNING_TTS_ENGINE,
       ExtensionPermissionMessage::kTtsEngine, kFlagNone, kTypeDefault);
   info->RegisterPermission(
-      kWebNavigation, "webNavigation", 0,
-      ExtensionPermissionMessage::kNone, kFlagSupportsOptional,
+      kWebNavigation, "webNavigation",
+      IDS_EXTENSION_PROMPT_WARNING_TABS,
+      ExtensionPermissionMessage::kTabs, kFlagSupportsOptional,
       kTypeDefault - kTypePlatformApp);
   info->RegisterPermission(
       kWebRequest, "webRequest", 0,
       ExtensionPermissionMessage::kNone, kFlagSupportsOptional,
       kTypeDefault - kTypePlatformApp);
   info->RegisterPermission(
       kWebRequestBlocking, "webRequestBlocking", 0,
       ExtensionPermissionMessage::kNone, kFlagSupportsOptional,
       kTypeDefault - kTypePlatformApp);
   info->RegisterPermission(
@@ skipping 572 matching lines @@
   std::set<std::string> new_hosts_set(GetDistinctHosts(new_list, false, false));
   std::set<std::string> old_hosts_set(GetDistinctHosts(old_list, false, false));
   std::set<std::string> new_hosts_only;
 
   std::set_difference(new_hosts_set.begin(), new_hosts_set.end(),
                       old_hosts_set.begin(), old_hosts_set.end(),
                       std::inserter(new_hosts_only, new_hosts_only.begin()));
 
   return !new_hosts_only.empty();
 }