OOPIF: Add frame_unique_name to FrameNavigationEntry.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index f7348985f61bb8b6d1aae455eca1b202bfe06c34..fe949ec72de0c0922f0be54e7ae9e7e9bb19c50c 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -4158,6 +4158,7 @@ void RenderFrameImpl::SendDidCommitProvisionalLoad(
     params.page_state = SingleHistoryItemToPageState(item);
     post_id = ExtractPostId(item);
   }
+  params.frame_unique_name = item.target().utf8();
   params.item_sequence_number = item.itemSequenceNumber();
   params.document_sequence_number = item.documentSequenceNumber();