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

components/web_modal/web_contents_modal_dialog_manager.h

Index: components/web_modal/web_contents_modal_dialog_manager.h
diff --git a/components/web_modal/web_contents_modal_dialog_manager.h b/components/web_modal/web_contents_modal_dialog_manager.h
index 6505301c215f73fa3e250b800f239dd3de988208..05421c1165bc952d7bc0fc7eee634e24ea84a1aa 100644
--- a/components/web_modal/web_contents_modal_dialog_manager.h
+++ b/components/web_modal/web_contents_modal_dialog_manager.h
@@ -31,11 +31,14 @@ class WebContentsModalDialogManager
 
   static SingleWebContentsDialogManager* CreateNativeWebModalManager(
       gfx::NativeWindow dialog,
-      SingleWebContentsDialogManagerDelegate* native_delegate);
+      SingleWebContentsDialogManagerDelegate* native_delegate,
+      bool* independent_bounds,
+      const char * kHasIndependentBoundsKey);
 
   // Shows the dialog as a web contents modal dialog. The dialog will notify via
   // WillClose() when it is being destroyed.
-  void ShowModalDialog(gfx::NativeWindow dialog);
+  void ShowModalDialog(gfx::NativeWindow dialog, bool *independent_bounds,
+                       const char * kHasIndependentBoundsKey);

[Mike Wittman, 2016/08/05 16:03:46]

I think you can avoid all this threading of independent bounds state with the
following:

- add a new function here, like ShowNonClippedModalDialog
- keep track of which gfx::NativeWindows want non-clipped display within
WebContentsModalDialogManager
- add a IsNonClipped(gfx::NativeWindow) function on
WebContentsModalDialogManagerDelegate and implement it here
- in NativeWebContentsModalDialogManagerViews::ManageDialog:
  if (native_delegate_->IsNonClipped(dialog()))
    child->SetNativeWindowProperty(...);

[rbpotter, 2016/08/12 16:36:07]

Done.

 
   // Allow clients to supply their own native dialog manager. Suitable for
   // bubble clients.