Fix constructor for AutocompleteMatch to initialize |subtype_identifier|

components/omnibox/browser/autocomplete_match.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/omnibox/browser/autocomplete_match.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/logging.h"
@@ skipping 67 matching lines @@
 
 AutocompleteMatch::AutocompleteMatch()
     : provider(NULL),
       relevance(0),
       typed_count(-1),
       deletable(false),
       allowed_to_be_default_match(false),
       swap_contents_and_description(false),
       transition(ui::PAGE_TRANSITION_GENERATED),
       type(AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED),
-      from_previous(false) {
-}
+      subtype_identifier(0),
+      from_previous(false) {}
 
 AutocompleteMatch::AutocompleteMatch(AutocompleteProvider* provider,
                                      int relevance,
                                      bool deletable,
                                      Type type)
     : provider(provider),
       relevance(relevance),
       typed_count(-1),
       deletable(deletable),
       allowed_to_be_default_match(false),
       swap_contents_and_description(false),
       transition(ui::PAGE_TRANSITION_TYPED),
       type(type),
-      from_previous(false) {
-}
+      subtype_identifier(0),
+      from_previous(false) {}
 
 AutocompleteMatch::AutocompleteMatch(const AutocompleteMatch& match)
     : provider(match.provider),
       relevance(match.relevance),
       typed_count(match.typed_count),
       deletable(match.deletable),
       fill_into_edit(match.fill_into_edit),
       inline_autocompletion(match.inline_autocompletion),
       allowed_to_be_default_match(match.allowed_to_be_default_match),
       destination_url(match.destination_url),
@@ skipping 508 matching lines @@
         << " is unsorted in relation to last offset of " << last_offset
         << ". Provider: " << provider_name << ".";
     DCHECK_LT(i->offset, text.length())
         << " Classification of [" << i->offset << "," << text.length()
         << "] is out of bounds for \"" << text << "\". Provider: "
         << provider_name << ".";
     last_offset = i->offset;
   }
 }
 #endif