Pick frame to navigate in the browser process.

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 9bebe15caa60124aa973b032054b76ad856efe97..4f47b8a0668c5c0a67ab8757879beae23ac6174e 100644
--- a/content/browser/frame_host/navigation_entry_impl.h
+++ b/content/browser/frame_host/navigation_entry_impl.h
@@ -104,8 +104,6 @@ class CONTENT_EXPORT NavigationEntryImpl
   base::Time GetTimestamp() const override;
   void SetCanLoadLocalResources(bool allow) override;
   bool GetCanLoadLocalResources() const override;
-  void SetFrameToNavigate(const std::string& frame_name) override;
-  const std::string& GetFrameToNavigate() const override;
   void SetExtraData(const std::string& key,
                     const base::string16& data) override;
   bool GetExtraData(const std::string& key,
@@ -415,10 +413,6 @@ class CONTENT_EXPORT NavigationEntryImpl
   // value is not needed after the entry commits and is not persisted.
   bool can_load_local_resources_;
 
-  // If not empty, the name of the frame to navigate. This field is not
-  // persisted, because it is currently only used in tests.
-  std::string frame_to_navigate_;
-
   // If not -1, this indicates which FrameTreeNode to navigate.  This field is
   // not persisted because it is experimental and only used when the
   // --site-per-process flag is passed.  It is cleared in |ResetForCommit|