[ObjC ARC] Converts ios/chrome/browser/ui/omnibox:omnibox_internal to ARC.

ios/chrome/browser/ui/omnibox/chrome_omnibox_client_ios.mm

 // Copyright 2013 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 "ios/chrome/browser/ui/omnibox/chrome_omnibox_client_ios.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/favicon/ios/web_favicon_driver.h"
 #include "components/omnibox/browser/omnibox_edit_controller.h"
 #include "components/search_engines/template_url_service.h"
 #include "ios/chrome/browser/autocomplete/autocomplete_classifier_factory.h"
 #include "ios/chrome/browser/autocomplete/autocomplete_provider_client_impl.h"
 #include "ios/chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "ios/chrome/browser/bookmarks/bookmarks_utils.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #include "ios/chrome/browser/chrome_url_constants.h"
 #include "ios/chrome/browser/search_engines/template_url_service_factory.h"
 #include "ios/chrome/browser/sessions/ios_chrome_session_tab_helper.h"
 #include "ios/chrome/browser/ui/omnibox/web_omnibox_edit_controller.h"
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
 #import "ios/web/public/navigation_manager.h"
 #include "ios/web/public/web_state/web_state.h"
 #include "url/gurl.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 ChromeOmniboxClientIOS::ChromeOmniboxClientIOS(
     WebOmniboxEditController* controller,
     ios::ChromeBrowserState* browser_state)
     : controller_(controller), browser_state_(browser_state) {}
 
 ChromeOmniboxClientIOS::~ChromeOmniboxClientIOS() {}
 
 std::unique_ptr<AutocompleteProviderClient>
 ChromeOmniboxClientIOS::CreateAutocompleteProviderClient() {
   return base::MakeUnique<AutocompleteProviderClientImpl>(browser_state_);
@@ skipping 128 matching lines @@
     const AutocompleteMatch& current_match,
     bool user_input_in_progress,
     base::string16& user_text,
     const AutocompleteResult& result,
     bool is_popup_open,
     bool has_focus) {}
 
 void ChromeOmniboxClientIOS::OnInputAccepted(const AutocompleteMatch& match) {}
 
 void ChromeOmniboxClientIOS::OnRevert() {}