The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5ba9f083e5cd2cf6a70063c5b9e0705fb6393665

commit 5ba9f083e5cd2cf6a70063c5b9e0705fb6393665
Author: Tarun Bansal <tbansal@chromium.org>
Date: Fri Nov 09 19:17:25 2018

Navigation Predictor: Skip iframe elements

Skip iframe elements when predicting the next navigation.

Change-Id: I2720ad4e59b70ca40a385e966e4c38844c83a1e2
Bug:  903884 
Reviewed-on: https://chromium-review.googlesource.com/c/1328708
Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Reviewed-by: Doug Arnett <dougarnett@chromium.org>
Commit-Queue: Tarun Bansal <tbansal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606925}
[modify] https://crrev.com/5ba9f083e5cd2cf6a70063c5b9e0705fb6393665/chrome/browser/navigation_predictor/navigation_predictor.cc
[modify] https://crrev.com/5ba9f083e5cd2cf6a70063c5b9e0705fb6393665/chrome/browser/navigation_predictor/navigation_predictor_browsertest.cc
[add] https://crrev.com/5ba9f083e5cd2cf6a70063c5b9e0705fb6393665/chrome/test/data/navigation_predictor/iframe_simple_page_with_anchors.html
[modify] https://crrev.com/5ba9f083e5cd2cf6a70063c5b9e0705fb6393665/chrome/test/data/navigation_predictor/page_with_ads_iframe.html