Revert "Support downsampling in ViewResourceAdapter"

This reverts commit 2bc512d784405143447c593b80b9728b117cd516.

Reason for revert: Cause of https://crbug.com/966859

Original change's description:
> Support downsampling in ViewResourceAdapter
> 
> Bug: 965609
> Change-Id: I148d5fe8b7371a529b612ed2e9b407ced0062f82
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1623139
> Commit-Queue: Wei-Yin Chen (陳威尹) <wychen@chromium.org>
> Reviewed-by: David Trainor <dtrainor@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#662915}

TBR=dtrainor@chromium.org,wychen@chromium.org

Change-Id: I1f97b70d1a5432bb303b5a5daece91daf11899c4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 965609
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1629327
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#663268}
6 files changed