Make the WebContentsUserData locator key private.

chrome/browser/password_manager/password_manager.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/password_manager/password_manager.h"
 
 #include "base/metrics/histogram.h"
 #include "base/threading/platform_thread.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ skipping 57 matching lines @@
 
 // static
 void PasswordManager::CreateForWebContentsAndDelegate(
     content::WebContents* contents,
     PasswordManagerDelegate* delegate) {
   if (FromWebContents(contents)) {
     DCHECK_EQ(delegate, FromWebContents(contents)->delegate_);
     return;
   }
 
-  contents->SetUserData(&kLocatorKey,
+  contents->SetUserData(UserDataKey(),
                         new PasswordManager(contents, delegate));
 }
 
 PasswordManager::PasswordManager(WebContents* web_contents,
                                  PasswordManagerDelegate* delegate)
     : content::WebContentsObserver(web_contents),
       delegate_(delegate),
       observer_(NULL) {
   DCHECK(delegate_);
   password_manager_enabled_.Init(prefs::kPasswordManagerEnabled,
@@ skipping 224 matching lines @@
       if (observer_) {
         observer_->OnAutofillDataAvailable(preferred_match.username_value,
                                            preferred_match.password_value);
       }
   }
 }
 
 bool PasswordManager::IsFillingEnabled() const {
   return delegate_->GetProfile() && *password_manager_enabled_;
 }