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

ui/views/window/dialog_delegate.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 "ui/views/window/dialog_delegate.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "build/build_config.h"
@@ skipping 64 matching lines @@
 #endif
   }
   params.context = context;
   params.parent = parent;
 #if !defined(OS_MACOSX)
   // Web-modal (ui::MODAL_TYPE_CHILD) dialogs with parents are marked as child
   // widgets to prevent top-level window behavior (independent movement, etc).
   // On Mac, however, the parent may be a native window (not a views::Widget),
   // and so the dialog must be considered top-level to gain focus and input
   // method behaviors.
-  params.child = parent && (delegate->GetModalType() == ui::MODAL_TYPE_CHILD);
+  params.child = parent && (delegate->GetModalType() == ui::MODAL_TYPE_CHILD)
+      && !delegate->IsTopLevel();
 #endif
   return params;
 }
 
 View* DialogDelegate::CreateExtraView() {
   return NULL;
 }
 
 bool DialogDelegate::GetExtraViewPadding(int* padding) {
   return false;
@@ skipping 157 matching lines @@
   state->role = ui::AX_ROLE_DIALOG;
 }
 
 void DialogDelegateView::ViewHierarchyChanged(
     const ViewHierarchyChangedDetails& details) {
   if (details.is_add && details.child == this && GetWidget())
     NotifyAccessibilityEvent(ui::AX_EVENT_ALERT, true);
 }
 
 }  // namespace views