Instant: Use only one hidden WebContents per profile.

chrome/browser/ui/webui/instant_ui.h

Index: chrome/browser/ui/webui/instant_ui.h
diff --git a/chrome/browser/ui/webui/instant_ui.h b/chrome/browser/ui/webui/instant_ui.h
index f050d132668d0b25606ca8a8462574e6af0aaa7e..786b87c810cda812f2502365321f4dc1b523288d 100644
--- a/chrome/browser/ui/webui/instant_ui.h
+++ b/chrome/browser/ui/webui/instant_ui.h
@@ -1,26 +1,23 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 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_WEBUI_INSTANT_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_INSTANT_UI_H_
 
+#include "base/basictypes.h"
 #include "content/public/browser/web_ui_controller.h"
 
-class PrefRegistrySyncable;
-
 namespace content {
-class BrowserContext;
+class WebUI;
 }
 
-// Provides configuration options for Instant web search and shows debug info.
+// Shows debug information for Instant.
 class InstantUI : public content::WebUIController {
  public:
-  // Constructs an instance using |web_ui| for its data sources and message
-  // handlers.
+  // Creates an instance using |web_ui| for data sources and message handlers.
   explicit InstantUI(content::WebUI* web_ui);
-
-  static void RegisterUserPrefs(PrefRegistrySyncable* registry);
+  virtual ~InstantUI();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(InstantUI);