Remove explicit keyword from multi-argument constructors

chrome/browser/ui/gtk/infobars/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_INFOBAR_GTK_H_
 #define CHROME_BROWSER_UI_GTK_INFOBARS_INFOBAR_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/tab_contents/infobar_delegate.h"
 #include "chrome/browser/tab_contents/infobar.h"
 #include "chrome/browser/ui/gtk/owned_widget_gtk.h"
 #include "content/common/notification_observer.h"
 #include "content/common/notification_registrar.h"
 #include "third_party/skia/include/core/SkPaint.h"
 #include "ui/base/gtk/gtk_signal.h"
 
 class CustomDrawButton;
 class GtkThemeService;
 class InfoBarDelegate;
 
 class InfoBarGtk : public InfoBar,
                    public NotificationObserver {
  public:
-  explicit InfoBarGtk(TabContentsWrapper* owner, InfoBarDelegate* delegate);
+  InfoBarGtk(TabContentsWrapper* owner, InfoBarDelegate* delegate);
   virtual ~InfoBarGtk();
 
   // Get the top level native GTK widget for this infobar.
   GtkWidget* widget();
 
   GdkColor GetBorderColor() const;
 
   // Returns the target height of the infobar if the bar is animating,
   // otherwise 0. We care about this number since we want to prevent
   // unnecessary renderer repaints while animating.
@@ skipping 66 matching lines @@
   void UpdateBorderColor();
 
   // A GtkExpandedContainer that contains |bg_box_| so we can varry the height
   // of the infobar.
   OwnedWidgetGtk widget_;
 
   DISALLOW_COPY_AND_ASSIGN(InfoBarGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_INFOBARS_INFOBAR_GTK_H_