Pass result of blockage across content API when new tab blocked.

chrome/browser/ui/views/external_tab_container_win.cc

Index: chrome/browser/ui/views/external_tab_container_win.cc
===================================================================
--- chrome/browser/ui/views/external_tab_container_win.cc	(revision 154977)
+++ chrome/browser/ui/views/external_tab_container_win.cc	(working copy)
@@ -465,7 +465,8 @@
                                              WebContents* new_contents,
                                              WindowOpenDisposition disposition,
                                              const gfx::Rect& initial_pos,
-                                             bool user_gesture) {
+                                             bool user_gesture,
+                                             bool* was_blocked) {
   if (!automation_) {
     DCHECK(pending_);
     LOG(ERROR) << "Invalid automation provider. Dropping new contents notify";