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

components/constrained_window/constrained_window_views.h

 // 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.
 
 #ifndef COMPONENTS_CONSTRAINED_WINDOW_CONSTRAINED_WINDOW_VIEWS_H_
 #define COMPONENTS_CONSTRAINED_WINDOW_CONSTRAINED_WINDOW_VIEWS_H_
 
 #include <memory>
 
 #include "ui/gfx/native_widget_types.h"
@@ skipping 29 matching lines @@
 
 void UpdateWidgetModalDialogPosition(
     views::Widget* widget,
     web_modal::ModalDialogHost* dialog_host);
 
 // Shows the dialog with a new SingleWebContentsDialogManager. The dialog will
 // notify via WillClose() when it is being destroyed.
 void ShowModalDialog(gfx::NativeWindow dialog,
                      content::WebContents* web_contents);
 
+// Shows the dialog with a new SingleWebContentsDialogManager in a non clipped
+// display (not confined to the bounds of the parent window) if this is
+// supported by the platform (currently Chrome OS and Mac only). The dialog will
+// notify via WillClose() when it is being destroyed.
+void ShowNonClippedModalDialog(gfx::NativeWindow dialog,
+                               content::WebContents* web_contents);
+
 // Calls CreateWebModalDialogViews, shows the dialog, and returns its widget.
 views::Widget* ShowWebModalDialogViews(
     views::WidgetDelegate* dialog,
     content::WebContents* initiator_web_contents);
 
+// Calls CreateWebModalDialogViews, shows the dialog as a non-clipped dialog
+// (bounds not constrained by the parent window) and returns its widget. For
+// platforms that do not support unclipped dialogs and for Mac, which has
+// nonclipped dialogs by default, this has the same behavior as

[Lei Zhang, 2016/08/19 03:28:47]

non-clipped

[rbpotter, 2016/08/19 16:59:42]

Done.

+// ShowWebModalDialogViews. Currently, unclipped dialogs are only supported on
+// Chrome OS and Mac (Mac dialogs are always non clipped).
+views::Widget* ShowNonClippedWebModalDialogViews(
+    views::WidgetDelegate* dialog,
+    content::WebContents* initiator_web_contents);
+
 // Create a widget for |dialog| that is modal to |web_contents|.
 // The modal type of |dialog->GetModalType()| must be ui::MODAL_TYPE_CHILD.
 views::Widget* CreateWebModalDialogViews(views::WidgetDelegate* dialog,
                                          content::WebContents* web_contents);
 
 // Create a widget for |dialog| that has a modality given by
 // |dialog->GetModalType()|.  The modal type must be either
 // ui::MODAL_TYPE_SYSTEM or ui::MODAL_TYPE_WINDOW.  This places the
 // dialog appropriately if |parent| is a valid browser window.
 views::Widget* CreateBrowserModalDialogViews(views::DialogDelegate* dialog,
                                              gfx::NativeWindow parent);
 
 }  // namespace constrained_window
 
 #endif  // COMPONENTS_CONSTRAINED_WINDOW_CONSTRAINED_WINDOW_VIEWS_H_