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

chrome/browser/ui/gtk/web_dialog_gtk.cc

Index: chrome/browser/ui/gtk/web_dialog_gtk.cc
===================================================================
--- chrome/browser/ui/gtk/web_dialog_gtk.cc	(revision 154977)
+++ chrome/browser/ui/gtk/web_dialog_gtk.cc	(working copy)
@@ -165,13 +165,15 @@
                                   content::WebContents* new_contents,
                                   WindowOpenDisposition disposition,
                                   const gfx::Rect& initial_pos,
-                                  bool user_gesture) {
+                                  bool user_gesture,
+                                  bool* was_blocked) {
   if (delegate_ && delegate_->HandleAddNewContents(
           source, new_contents, disposition, initial_pos, user_gesture)) {
     return;
   }
   WebDialogWebContentsDelegate::AddNewContents(
-      source, new_contents, disposition, initial_pos, user_gesture);
+      source, new_contents, disposition, initial_pos, user_gesture,
+      was_blocked);
 }
 
 void WebDialogGtk::LoadingStateChanged(content::WebContents* source) {