Remove explicit keyword from multi-argument constructors

chrome/browser/ui/gtk/browser_toolbar_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_BROWSER_TOOLBAR_GTK_H_
 #define CHROME_BROWSER_UI_GTK_BROWSER_TOOLBAR_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 #include <string>
@@ skipping 25 matching lines @@
 class TabContents;
 class ToolbarModel;
 
 // View class that displays the GTK version of the toolbar and routes gtk
 // events back to the Browser.
 class BrowserToolbarGtk : public CommandUpdater::CommandObserver,
                           public ui::AcceleratorProvider,
                           public MenuGtk::Delegate,
                           public NotificationObserver {
  public:
-  explicit BrowserToolbarGtk(Browser* browser, BrowserWindowGtk* window);
+  BrowserToolbarGtk(Browser* browser, BrowserWindowGtk* window);
   virtual ~BrowserToolbarGtk();
 
   // Create the contents of the toolbar. |top_level_window| is the GtkWindow
   // to which we attach our accelerators.
   void Init(Profile* profile, GtkWindow* top_level_window);
 
   // Set the various widgets' ViewIDs.
   void SetViewIDs();
 
   void Show();
@@ skipping 152 matching lines @@
   // rendering.
   OwnedWidgetGtk offscreen_entry_;
 
   // Manages the home button drop signal handler.
   scoped_ptr<ui::GtkSignalRegistrar> drop_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserToolbarGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_BROWSER_TOOLBAR_GTK_H_