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

components/constrained_window/show_modal_dialog_cocoa.cc

 // Copyright 2016 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 <memory>
 
 #include "components/constrained_window/constrained_window_views.h"
 #include "components/web_modal/single_web_contents_dialog_manager.h"
 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 #include "content/public/browser/web_contents.h"
+#include "ui/base/accelerators/accelerator.h"
 #include "ui/gfx/native_widget_types.h"
 
 // TODO(patricialor): This is a layering violation and should be deleted.
 // Currently it's needed because on Cocoa, the dialog needs to be shown with a
 // SingleWebContentsDialogManagerViewsMac, which depends on things inside
 // chrome/browser/ui/cocoa/constrained_window/* and thus can't be moved out into
 // components/constrained_window/*. Instead, to get this to work, the
 // CreateNativeWebModalManager() method is declared in the web_modal component,
 // but defined outside of that in c/b/u/cocoa/.
 
 namespace constrained_window {
 
 void ShowModalDialog(gfx::NativeWindow dialog,
                      content::WebContents* initiator_web_contents) {
   web_modal::WebContentsModalDialogManager* manager =
       web_modal::WebContentsModalDialogManager::FromWebContents(
           initiator_web_contents);
   std::unique_ptr<web_modal::SingleWebContentsDialogManager> dialog_manager(
       web_modal::WebContentsModalDialogManager::CreateNativeWebModalManager(
           dialog, manager));
   manager->ShowDialogWithManager(dialog, std::move(dialog_manager));
 }
 
+void ShowTopLevelModalDialog(gfx::NativeWindow dialog,
+                             content::WebContents* initiator_web_contents,
+                             ui::AcceleratorTarget* target) {
+  // Mac uses sheets, so just call the normal show modal dialog, and the dialog
+  // will not be clipped.
+  ShowModalDialog(dialog, initiator_web_contents);
+}
+
 }  // namespace constrained_window