Move redirect_chain from NavigationEntry to FrameNavigationEntry.

content/browser/frame_host/navigation_entry_impl.h

Index: content/browser/frame_host/navigation_entry_impl.h
diff --git a/content/browser/frame_host/navigation_entry_impl.h b/content/browser/frame_host/navigation_entry_impl.h
index fa2c88e9614ec8db0e57e2a3d5ee221c228e1203..4c7814e25ab0d115aeba29525c795e31fdad5d67 100644
--- a/content/browser/frame_host/navigation_entry_impl.h
+++ b/content/browser/frame_host/navigation_entry_impl.h
@@ -143,8 +143,8 @@ class CONTENT_EXPORT NavigationEntryImpl
   void ClearExtraData(const std::string& key) override;
   void SetHttpStatusCode(int http_status_code) override;
   int GetHttpStatusCode() const override;
-  void SetRedirectChain(const std::vector<GURL>& redirects) override;
-  const std::vector<GURL>& GetRedirectChain() const override;
+  void SetMainFrameRedirectChain(const std::vector<GURL>& redirects) override;
+  const std::vector<GURL>& GetMainFrameRedirectChain() const override;
   bool IsRestored() const override;
 
   // Creates a copy of this NavigationEntryImpl that can be modified
@@ -219,6 +219,7 @@ class CONTENT_EXPORT NavigationEntryImpl
       int64_t document_sequence_number,
       SiteInstanceImpl* site_instance,
       scoped_refptr<SiteInstanceImpl> source_site_instance,
+      const std::vector<GURL>& redirect_chain,
       const GURL& url,
       const Referrer& referrer,
       const PageState& page_state,
@@ -483,11 +484,6 @@ class CONTENT_EXPORT NavigationEntryImpl
   // doing the redirect).
   bool should_replace_entry_;
 
-  // This is used when transferring a pending entry from one process to another.
-  // We also send this data through session sync for offline analysis.
-  // It is preserved after commit but should not be persisted.
-  std::vector<GURL> redirect_chain_;
-
   // This is set to true when this entry's navigation should clear the session
   // history both on the renderer and browser side. The browser side history
   // won't be cleared until the renderer has committed this navigation. This