Make using WebContentsUserData simpler.

chrome/browser/ui/intents/web_intent_picker_controller.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_INTENTS_WEB_INTENT_PICKER_CONTROLLER_H_
 #define CHROME_BROWSER_UI_INTENTS_WEB_INTENT_PICKER_CONTROLLER_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 102 matching lines @@
   virtual void OnChooseAnotherService() OVERRIDE;
   virtual void OnClosing() OVERRIDE;
 
   // extensions::WebstoreInstaller::Delegate implementation.
   virtual void OnExtensionInstallSuccess(const std::string& id) OVERRIDE;
   virtual void OnExtensionInstallFailure(const std::string& id,
                                          const std::string& error) OVERRIDE;
 
  private:
   explicit WebIntentPickerController(content::WebContents* web_contents);
-  static int kUserDataKey;
   friend class WebContentsUserData<WebIntentPickerController>;
 
   friend class WebIntentPickerControllerTest;
   friend class WebIntentPickerControllerBrowserTest;
   friend class WebIntentPickerControllerIncognitoBrowserTest;
   friend class WebIntentsButtonDecorationTest;
 
   // Forward declaraton of the internal implementation class.
   class UMAReporter;
 
@@ skipping 195 matching lines @@
   // Bucket identifier for UMA reporting. Saved off in a field
   // to avoid repeated calculation of the bucket across
   // multiple UMA calls. Should be recalculated each time
   // |intents_dispatcher_| is set.
   web_intents::UMABucket uma_bucket_;
 
   DISALLOW_COPY_AND_ASSIGN(WebIntentPickerController);
 };
 
 #endif  // CHROME_BROWSER_UI_INTENTS_WEB_INTENT_PICKER_CONTROLLER_H_