Add missing (and remove superfluous) 'explicit' from constructors.

chrome/browser/ui/gtk/ssl_client_certificate_selector.cc

 // 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.
 
 #include "chrome/browser/ssl/ssl_client_certificate_selector.h"
 
 #include <gtk/gtk.h>
 
 #include <string>
 #include <vector>
@@ skipping 27 matching lines @@
 enum {
   RESPONSE_SHOW_CERT_INFO = 1,
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 // SSLClientCertificateSelector
 
 class SSLClientCertificateSelector : public SSLClientAuthObserver,
                                      public ConstrainedWindowGtkDelegate {
  public:
-  explicit SSLClientCertificateSelector(
+  SSLClientCertificateSelector(
       WebContents* parent,
       const net::HttpNetworkSession* network_session,
       net::SSLCertRequestInfo* cert_request_info,
       const base::Callback<void(net::X509Certificate*)>& callback);
   ~SSLClientCertificateSelector();
 
   void Show();
 
   // SSLClientAuthObserver implementation:
   virtual void OnCertSelectedByNotification();
@@ skipping 329 matching lines @@
     content::WebContents* contents,
     const net::HttpNetworkSession* network_session,
     net::SSLCertRequestInfo* cert_request_info,
     const base::Callback<void(net::X509Certificate*)>& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   (new SSLClientCertificateSelector(
       contents, network_session, cert_request_info, callback))->Show();
 }
 
 }  // namespace chrome