Remove HTMLResourcePreloader::CountPreloads() and GetDocument()

Simply not used.

Bug: 914690
Change-Id: I80779c7d7b2d4e8e8de410d451a78183931807a0
Reviewed-on: https://chromium-review.googlesource.com/c/1361946
Reviewed-by: Charlie Harrison <csharrison@chromium.org>
Commit-Queue: Hiroshige Hayashizaki <hiroshige@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616511}
2 files changed