DRAFT CL: Add FrameNavigationEntry and track subframe session histories.

content/renderer/history_controller.h

Index: content/renderer/history_controller.h
diff --git a/content/renderer/history_controller.h b/content/renderer/history_controller.h
index 97969318aff16af20915eaa03c3f760d006bb9ef..1e72d8bfdb0a1ba57ef005d21c052eacbda7a3f7 100644
--- a/content/renderer/history_controller.h
+++ b/content/renderer/history_controller.h
@@ -109,9 +109,6 @@ class CONTENT_EXPORT HistoryController {
   explicit HistoryController(RenderViewImpl* render_view);
   ~HistoryController();
 
-  void GoToEntry(scoped_ptr<HistoryEntry> entry,
-                 blink::WebURLRequest::CachePolicy cache_policy);
-
   void UpdateForCommit(RenderFrameImpl* frame,
                        const blink::WebHistoryItem& item,
                        blink::WebHistoryCommitType commit_type,
@@ -124,9 +121,6 @@ class CONTENT_EXPORT HistoryController {
  private:
   typedef std::vector<std::pair<blink::WebFrame*, blink::WebHistoryItem> >
       HistoryFrameLoadVector;
-  void RecursiveGoToEntry(blink::WebFrame* frame,
-                          HistoryFrameLoadVector& sameDocumentLoads,
-                          HistoryFrameLoadVector& differentDocumentLoads);
 
   void UpdateForInitialLoadInChildFrame(RenderFrameImpl* frame,
                                         const blink::WebHistoryItem& item);