New WebContents created via ctrl-click should be in a new process.

content/public/browser/page_navigator.h

Index: content/public/browser/page_navigator.h
diff --git a/content/public/browser/page_navigator.h b/content/public/browser/page_navigator.h
index eb9e6a83e15df25bca29789867a3d613a0b88504..071639ec5966c21d41de73e792176eaf9e597b34 100644
--- a/content/public/browser/page_navigator.h
+++ b/content/public/browser/page_navigator.h
@@ -82,6 +82,12 @@ struct CONTENT_EXPORT OpenURLParams {
   // The disposition requested by the navigation source.
   WindowOpenDisposition disposition;
 
+  // Controls creation of new web contents (in case |disposition| asks for a new
+  // tab or window).  If |force_new_renderer_for_new_contents| is true, then we
+  // try to put the new contents in a new renderer, even if they are same-site
+  // as |source_site_instance| (this is subject to renderer process limits).
+  bool force_new_renderer_for_new_contents;
+
   // The transition type of navigation.
   ui::PageTransition transition;