MacViews: Enable views based External Protocol dialog behind secondary-ui-md flag.

chrome/browser/ui/views/external_protocol_dialog.cc

Index: chrome/browser/ui/views/external_protocol_dialog.cc
diff --git a/chrome/browser/ui/views/external_protocol_dialog.cc b/chrome/browser/ui/views/external_protocol_dialog.cc
index 1cfc6c81bc2e221940b17399f9486d9d55ab15a2..740f88b32d2fe87cb3d28b8dac0e74d53c3c2c31 100644
--- a/chrome/browser/ui/views/external_protocol_dialog.cc
+++ b/chrome/browser/ui/views/external_protocol_dialog.cc
@@ -27,13 +27,13 @@ const int kMessageWidth = 400;
 
 }  // namespace
 
-///////////////////////////////////////////////////////////////////////////////
-// ExternalProtocolHandler
+namespace chrome {
 
-// static
-void ExternalProtocolHandler::RunExternalProtocolDialog(
-    const GURL& url, int render_process_host_id, int routing_id,
-    ui::PageTransition page_transition, bool has_user_gesture) {
+void RunExternalProtocolDialogViews(const GURL& url,

[tapted, 2017/01/17 21:17:13]

consider wrapping this entire method in

#if !defined(OS_MACOSX) || BUILDFLAG(MAC_VIEWS_BROWSER)

then duplicating what's needed in external_protocol_dialog_views_mac.mm (new
file)

+                                    int render_process_host_id,
+                                    int routing_id,
+                                    ui::PageTransition page_transition,
+                                    bool has_user_gesture) {
   std::unique_ptr<ExternalProtocolDialogDelegate> delegate(
       new ExternalProtocolDialogDelegate(url, render_process_host_id,
                                          routing_id));
@@ -47,6 +47,8 @@ void ExternalProtocolHandler::RunExternalProtocolDialog(
                              routing_id);
 }
 
+}  // namespace chrome
+
 ///////////////////////////////////////////////////////////////////////////////
 // ExternalProtocolDialog