Make using WebContentsUserData simpler.

chrome/browser/ui/search_engines/search_engine_tab_helper.cc

 // Copyright (c) 2012 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/browser/ui/search_engines/search_engine_tab_helper.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search_engines/template_url.h"
 #include "chrome/browser/search_engines/template_url_fetcher.h"
 #include "chrome/browser/search_engines/template_url_fetcher_factory.h"
 #include "chrome/browser/search_engines/template_url_service.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/ui/search_engines/template_url_fetcher_ui_callbacks.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/favicon_status.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/frame_navigate_params.h"
 
 using content::NavigationController;
 using content::NavigationEntry;
 using content::WebContents;
 
-int SearchEngineTabHelper::kUserDataKey;
+DEFINE_WEB_CONTENTS_USER_DATA_KEY(SearchEngineTabHelper)
 
 namespace {
 
 // Returns true if the entry's transition type is FORM_SUBMIT.
 bool IsFormSubmit(const NavigationEntry* entry) {
   return (content::PageTransitionStripQualifier(entry->GetTransitionType()) ==
           content::PAGE_TRANSITION_FORM_SUBMIT);
 }
 
 string16 GenerateKeywordFromNavigationEntry(const NavigationEntry* entry) {
@@ skipping 157 matching lines @@
   // the favicon url wasn't obtained before the load started. This assumes the
   // latter.
   // TODO(sky): Need a way to set the favicon that doesn't involve generating
   // its url.
   data.favicon_url = current_favicon.is_valid() ?
       current_favicon : TemplateURL::GenerateFaviconURL(params.referrer.url);
   data.safe_for_autoreplace = true;
   data.input_encodings.push_back(params.searchable_form_encoding);
   url_service->Add(new TemplateURL(profile, data));
 }