Omnibox - ClipboardRecentContent - Make Proper Singleton

components/omnibox/browser/autocomplete_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 COMPONENTS_OMNIBOX_BROWSER_AUTOCOMPLETE_CONTROLLER_H_
 #define COMPONENTS_OMNIBOX_BROWSER_AUTOCOMPLETE_CONTROLLER_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "components/omnibox/browser/autocomplete_input.h"
 #include "components/omnibox/browser/autocomplete_provider.h"
 #include "components/omnibox/browser/autocomplete_provider_client.h"
 #include "components/omnibox/browser/autocomplete_provider_listener.h"
 #include "components/omnibox/browser/autocomplete_result.h"
 
 class AutocompleteControllerDelegate;
-class ClipboardRecentContent;
 class HistoryURLProvider;
 class KeywordProvider;
 class SearchProvider;
 class TemplateURLService;
 class ZeroSuggestProvider;
 
 // The AutocompleteController is the center of the autocomplete system.  A
 // class creates an instance of the controller, which in turn creates a set of
 // AutocompleteProviders to serve it.  The owning class can ask the controller
 // to Start() a query; the controller in turn passes this call down to the
@@ skipping 167 matching lines @@
   Providers providers_;
 
   HistoryURLProvider* history_url_provider_;
 
   KeywordProvider* keyword_provider_;
 
   SearchProvider* search_provider_;
 
   ZeroSuggestProvider* zero_suggest_provider_;
 
-  // Used to build the ClipboardURLProvider.
-  std::unique_ptr<ClipboardRecentContent> clipboard_recent_content_;
-
   // Input passed to Start.
   AutocompleteInput input_;
 
   // Data from the autocomplete query.
   AutocompleteResult result_;
 
   // The most recent time the default match (inline match) changed.  This may
   // be earlier than the most recent keystroke if the recent keystrokes didn't
   // change the suggested match in the omnibox.  (For instance, if
   // a user typed "mail.goog" and the match https://mail.google.com/ was
@@ skipping 25 matching lines @@
   // Are we in Start()? This is used to avoid updating |result_| and sending
   // notifications until Start() has been invoked on all providers.
   bool in_start_;
 
   TemplateURLService* template_url_service_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompleteController);
 };
 
 #endif  // COMPONENTS_OMNIBOX_BROWSER_AUTOCOMPLETE_CONTROLLER_H_