Make using WebContentsUserData simpler.

chrome/browser/omnibox_search_hint.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/omnibox_search_hint.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
@@ skipping 24 matching lines @@
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/web_contents.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 using content::NavigationController;
 using content::NavigationEntry;
 
-int OmniboxSearchHint::kUserDataKey;
+DEFINE_WEB_CONTENTS_USER_DATA_KEY(OmniboxSearchHint)
 
 // The URLs of search engines for which we want to trigger the infobar.
 const char* const kSearchEngineURLs[] = {
     "http://www.google.com/",
     "http://www.yahoo.com/",
     "http://www.bing.com/",
     "http://www.altavista.com/",
     "http://www.ask.com/",
     "http://www.wolframalpha.com/",
 };
@@ skipping 188 matching lines @@
 }
 
 // static
 bool OmniboxSearchHint::IsEnabled(Profile* profile) {
   // The infobar can only be shown if the correct switch has been provided and
   // the user did not dismiss the infobar before.
   return profile->GetPrefs()->GetBoolean(prefs::kShowOmniboxSearchHint) &&
       CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kSearchInOmniboxHint);
 }