MacViews: Remove constrained window dependencies for certificate viewer.

components/constrained_window/constrained_window_views.h

Index: components/constrained_window/constrained_window_views.h
diff --git a/components/constrained_window/constrained_window_views.h b/components/constrained_window/constrained_window_views.h
index fd44fe77d3a6ddf46780980b4c230fc35e681af3..c322b295cb9423f6df45b22665daa05cebe76e8f 100644
--- a/components/constrained_window/constrained_window_views.h
+++ b/components/constrained_window/constrained_window_views.h
@@ -47,6 +47,12 @@ views::Widget* ShowWebModalDialogViews(
     views::WidgetDelegate* dialog,
     content::WebContents* initiator_web_contents);
 
+// Like ShowWebModalDialogViews, but uses a Mac-specific class for creating

[tapted, 2016/05/13 06:08:46]

put this in #if defined(OS_MACOSX)

and I'd go with

// Like ShowWebModalDialogViews, but used to show a native dialog "sheet" on
Mac. Sheets are always modal to their parent window. To make them tab-modal,
this will parent the sheet off an invisible window that is tab-modal.

[Patti Lor, 2016/05/18 04:48:38]

Done.

+// dialogs which are just invisible parents for Cocoa dialogs.
+views::Widget* ShowParentedWebModalDialogViews(
+    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,