OOPIF: Reinitialize a dead subframe correctly for same-site navigations.

content/browser/frame_host/render_frame_host_manager.h

Index: content/browser/frame_host/render_frame_host_manager.h
diff --git a/content/browser/frame_host/render_frame_host_manager.h b/content/browser/frame_host/render_frame_host_manager.h
index 30b96e06ff8dcb015cb69081fc67d619794db7c0..0ffaa0ab979a5b6c1503c4ac51065253192bda58 100644
--- a/content/browser/frame_host/render_frame_host_manager.h
+++ b/content/browser/frame_host/render_frame_host_manager.h
@@ -685,6 +685,11 @@ class CONTENT_EXPORT RenderFrameHostManager
   // above.
   bool InitRenderFrame(RenderFrameHostImpl* render_frame_host);
 
+  // Helper to reinitialize the RenderFrame, RenderView, and the opener chain
+  // for the provided |render_frame_host|.  Used when the |render_frame_host|
+  // needs to be reused for a new navigation, but it is not live.
+  bool ReinitializeRenderFrame(RenderFrameHostImpl* render_frame_host);
+
   // Makes the pending WebUI on the current RenderFrameHost active. Call this
   // when the current RenderFrameHost commits and it has a pending WebUI.
   void CommitPendingWebUI();