Preserve Page::openedByDOM state across process swaps.

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index a78494079ef9c9edb3004cf3e9ea87ca147c157c..50358f88f99b2bf021509a4d95f492351130de68 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -181,8 +181,11 @@ class CONTENT_EXPORT RenderViewImpl
       public base::SupportsWeakPtr<RenderViewImpl> {
  public:
   // Creates a new RenderView. |opener_id| is the routing ID of the RenderView
-  // responsible for creating this RenderView.
+  // responsible for creating this RenderView. Note that if the original opener
+  // has been closed, |window_was_created_with_opener| will be true and
+  // |opener_id| will be MSG_ROUTING_NONE.
   static RenderViewImpl* Create(int32 opener_id,
+                                bool window_was_created_with_opener,
                                 const RendererPreferences& renderer_prefs,
                                 const WebPreferences& webkit_prefs,
                                 int32 routing_id,