Revert of Reland: Ntp: restore scroll position.

content/public/android/java/src/org/chromium/content_public/browser/NavigationController.java

Index: content/public/android/java/src/org/chromium/content_public/browser/NavigationController.java
diff --git a/content/public/android/java/src/org/chromium/content_public/browser/NavigationController.java b/content/public/android/java/src/org/chromium/content_public/browser/NavigationController.java
index 84b563713d695ea18b8a1a9af6a0ca6e3e7c483c..65da9eb17c6ea5383954a9e03a6df6edea2b1376 100644
--- a/content/public/android/java/src/org/chromium/content_public/browser/NavigationController.java
+++ b/content/public/android/java/src/org/chromium/content_public/browser/NavigationController.java
@@ -196,20 +196,4 @@
      * @param replaceEntry Whether to replace the current entry in source
      */
     public void copyStateFromAndPrune(NavigationController source, boolean replaceEntry);
-
-    /**
-     * Gets extra data on the {@link NavigationEntry} at {@code index}.
-     * @param index The index of the navigation entry.
-     * @param key The data key.
-     * @return The data value, or null if not found.
-     */
-    String getEntryExtraData(int index, String key);
-
-    /**
-     * Sets extra data on the {@link NavigationEntry} at {@code index}.
-     * @param index The index of the navigation entry.
-     * @param key The data key.
-     * @param value The data value.
-     */
-    void setEntryExtraData(int index, String key, String value);
 }