[FRE] Clean unused and not needed properties and interface

chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunPage.java

Index: chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunPage.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunPage.java b/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunPage.java
index d424dfd620854c6cee051130c916e7dc8a685798..7221c6ff8ef203b80f62f21e5d3c39647d389302 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunPage.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/firstrun/FirstRunPage.java
@@ -14,24 +14,6 @@ import android.os.Bundle;
 public class FirstRunPage extends Fragment {
     private Bundle mProperties = new Bundle();
 
-    // FRE properties:
-    private static final String LAST_PAGE_NUMBER = "LastPageNumber";
-
-    // Per-page properties:
-    private static final String THIS_PAGE_NUMBER = "ThisPageNumber";
-
-    /**
-     * Appends page-specific properties to the page instance bundle.
-     * @param props Instance properties.
-     * @param pageNumber This page number in the First Run sequence.
-     * @param lastPageNumber Last page number in the First Run sequence.
-     * @return Instance properties with the page-specific properties added.
-     */
-    public static Bundle addProperties(Bundle props, int pageNumber, int lastPageNumber) {
-        props.putInt(THIS_PAGE_NUMBER, pageNumber);
-        return props;
-    }
-
     /**
      * @return Whether this page should be skipped on the FRE creation.
      * @param appContext An application context.
@@ -81,13 +63,6 @@ public class FirstRunPage extends Fragment {
     }
 
     /**
-     * @return Whether this page is the last page of the FRE.
-     */
-    protected boolean isLastPage() {
-        return getProperties().getInt(THIS_PAGE_NUMBER) == getProperties().getInt(LAST_PAGE_NUMBER);
-    }
-
-    /**
      * Advances to the next FRE page.
      */
     protected void advanceToNextPage() {