Remove explicit keyword from multi-argument constructors

chrome/browser/ui/search_engines/template_url_fetcher_ui_callbacks.h

 // Copyright (c) 2011 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_SEARCH_ENGINES_TEMPLATE_URL_FETCHER_UI_CALLBACKS_H_
 #define CHROME_BROWSER_UI_SEARCH_ENGINES_TEMPLATE_URL_FETCHER_UI_CALLBACKS_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "chrome/browser/search_engines/template_url_fetcher_callbacks.h"
 #include "content/common/notification_observer.h"
 #include "content/common/notification_registrar.h"
 
 class SearchEngineTabHelper;
 class TabContents;
 
 // Callbacks which display UI for the TemplateURLFetcher.
 class TemplateURLFetcherUICallbacks : public TemplateURLFetcherCallbacks,
                                       public NotificationObserver {
  public:
-  explicit TemplateURLFetcherUICallbacks(SearchEngineTabHelper* tab_helper,
-                                         TabContents* tab_contents);
+  TemplateURLFetcherUICallbacks(SearchEngineTabHelper* tab_helper,
+                                TabContents* tab_contents);
   virtual ~TemplateURLFetcherUICallbacks();
 
   // TemplateURLFetcherCallback implementation.
   virtual void ConfirmSetDefaultSearchProvider(
       TemplateURL* template_url,
       TemplateURLService* template_url_service);
   virtual void ConfirmAddSearchProvider(
       TemplateURL* template_url,
       Profile* profile);
 
@@ skipping 10 matching lines @@
   // The TabContents where this request originated.
   TabContents* tab_contents_;
 
   // Handles registering for our notifications.
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(TemplateURLFetcherUICallbacks);
 };
 
 #endif  // CHROME_BROWSER_UI_SEARCH_ENGINES_TEMPLATE_URL_FETCHER_UI_CALLBACKS_H_