Remove explicit keyword from multi-argument constructors

chrome/browser/ui/gtk/infobars/after_translate_infobar_gtk.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_GTK_INFOBARS_AFTER_TRANSLATE_INFOBAR_GTK_H_
 #define CHROME_BROWSER_UI_GTK_INFOBARS_AFTER_TRANSLATE_INFOBAR_GTK_H_
 #pragma once
 
 #include "base/task.h"
 #include "chrome/browser/ui/gtk/infobars/translate_infobar_base_gtk.h"
 
 class TranslateInfoBarDelegate;
 
 class AfterTranslateInfoBar : public TranslateInfoBarBase {
  public:
-  explicit AfterTranslateInfoBar(TabContentsWrapper* owner,
-                                 TranslateInfoBarDelegate* delegate);
+  AfterTranslateInfoBar(TabContentsWrapper* owner,
+                        TranslateInfoBarDelegate* delegate);
   virtual ~AfterTranslateInfoBar();
 
   // Overridden from TranslateInfoBarBase:
   virtual void Init();
 
  protected:
   virtual bool ShowOptionsMenuButton() const;
 
  private:
   CHROMEGTK_CALLBACK_0(AfterTranslateInfoBar, void, OnOriginalLanguageModified);
   CHROMEGTK_CALLBACK_0(AfterTranslateInfoBar, void, OnTargetLanguageModified);
   CHROMEGTK_CALLBACK_0(AfterTranslateInfoBar, void, OnRevertPressed);
 
   // These methods set the original/target language on the
   // TranslateInfobarDelegate.
   void SetOriginalLanguage(size_t language_index);
   void SetTargetLanguage(size_t language_index);
 
   ScopedRunnableMethodFactory<AfterTranslateInfoBar> method_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AfterTranslateInfoBar);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_INFOBARS_AFTER_TRANSLATE_INFOBAR_GTK_H_