Add method to change NavigationView text appearance

BUG: 21455036
Change-Id: I5ce72af991c66ac1f7750bd1820bc4361f95eddf
diff --git a/design/api/current.txt b/design/api/current.txt
index 4e71e40..217ba99 100644
--- a/design/api/current.txt
+++ b/design/api/current.txt
@@ -195,6 +195,7 @@
     method public void setItemBackground(android.graphics.drawable.Drawable);
     method public void setItemBackgroundResource(int);
     method public void setItemIconTintList(android.content.res.ColorStateList);
+    method public void setItemTextAppearance(int);
     method public void setItemTextColor(android.content.res.ColorStateList);
     method public void setNavigationItemSelectedListener(android.support.design.widget.NavigationView.OnNavigationItemSelectedListener);
     method public void setCheckedItem(int);