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

chrome/browser/ui/views/constrained_web_dialog_delegate_views.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/constrained_web_dialog_delegate_base.h"
 
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "chrome/browser/ui/browser_finder.h"
@@ skipping 258 matching lines @@
     ui::WebDialogDelegate* delegate,
     content::WebContents* web_contents) {
   ConstrainedWebDialogDelegateViewViews* dialog =
       new ConstrainedWebDialogDelegateViewViews(
           browser_context, delegate, web_contents,
           gfx::Size(), gfx::Size());
   constrained_window::ShowWebModalDialogViews(dialog, web_contents);
   return dialog;
 }
 
+ConstrainedWebDialogDelegate* ShowTopLevelConstrainedWebDialog(
+    content::BrowserContext* browser_context,
+    ui::WebDialogDelegate* delegate,
+    content::WebContents* web_contents) {
+  ConstrainedWebDialogDelegateViewViews* dialog =
+      new ConstrainedWebDialogDelegateViewViews(
+          browser_context, delegate, web_contents,
+          gfx::Size(), gfx::Size());
+#if !defined(OS_MACOSX)  // May want to make this Chrome OS only rather

[rbpotter, 2016/07/25 18:53:28]

In what cases should the new set of code (allowing the dialog to stick out) run?
This flag is what enables the dialog size to not be tied to the parent window. 

+  // than all non-MAC, TBD.
+  dialog->set_top_level(true);
+#endif
+  constrained_window::ShowWebModalDialogViews(dialog, web_contents);
+  return dialog;
+}
+
 ConstrainedWebDialogDelegate* ShowConstrainedWebDialogWithAutoResize(
     content::BrowserContext* browser_context,
     ui::WebDialogDelegate* delegate,
     content::WebContents* web_contents,
     const gfx::Size& min_size,
     const gfx::Size& max_size) {
   DCHECK(!min_size.IsEmpty());
   DCHECK(!max_size.IsEmpty());
   ConstrainedWebDialogDelegateViewViews* dialog =
       new ConstrainedWebDialogDelegateViewViews(
           browser_context, delegate, web_contents,
           min_size, max_size);
   constrained_window::CreateWebModalDialogViews(dialog, web_contents);
   return dialog;
 }