Revert of Remove the use of page id from building the commit params.

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 76712ea26b881539483f6d9435a39ae81726dffd..a737bc2863da17de921e96e274252dbb3af9dcc8 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -860,6 +860,13 @@
   // See documentation in RenderView.
   int32 page_id_;
 
+  // Indicates the ID of the last page that we sent a FrameNavigate to the
+  // browser for. This is used to determine if the most recent transition
+  // generated a history entry (less than page_id_), or not (equal to or
+  // greater than). Note that this will be greater than page_id_ if the user
+  // goes back.
+  int32 last_page_id_sent_to_browser_;
+
   // The next available page ID to use for this RenderView.  These IDs are
   // specific to a given RenderView and the frames within it.
   int32 next_page_id_;