Created min size for print preview dialog and modified to allow the

chrome/browser/ui/webui/certificate_viewer_webui.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/ui/webui/certificate_viewer_webui.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 223 matching lines @@
 
 gfx::NativeWindow CertificateViewerDialog::GetNativeWebContentsModalDialog() {
   return dialog_->GetNativeDialog();
 }
 
 GURL CertificateViewerDialog::GetDialogContentURL() const {
   return GURL(chrome::kChromeUICertificateViewerURL);
 }
 
 ui::ModalType CertificateViewerDialog::GetDialogModalType() const {
-  return ui::MODAL_TYPE_NONE;
+  return ui::MODAL_TYPE_CHILD;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // CertificateViewerDialogHandler
 
 CertificateViewerDialogHandler::CertificateViewerDialogHandler(
     CertificateViewerModalDialog* dialog,
     net::X509Certificate* cert)
     : cert_(cert), dialog_(dialog) {
   cert_chain_.push_back(cert_->os_cert_handle());
@@ skipping 205 matching lines @@
     const base::ListValue* args) const {
   int cert_index;
   double val;
   if (!(args->GetDouble(0, &val)))
     return -1;
   cert_index = static_cast<int>(val);
   if (cert_index < 0 || cert_index >= static_cast<int>(cert_chain_.size()))
     return -1;
   return cert_index;
 }