This reverts commit 64bb6e6c.

Reason for revert: Breaks layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/15092

See:
https://github.com/v8/v8/wiki/Blink-layout-tests

Original change's description:
> [runtime] Pass global proxy as receiver to native accessors in case of contextual access
> 
> Bug:
> 
> Change-Id: I288c0d7a34b65eda6c6e46168c436b87a350f6d4
> Reviewed-on: https://chromium-review.googlesource.com/483199
> Commit-Queue: Toon Verwaest <verwaest@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#44739}

TBR=yangguo@chromium.org,verwaest@chromium.org,v8-reviews@googlegroups.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: Ifc204ce5a2e6d774b993210fcc6782fc6f27dd7b
Reviewed-on: https://chromium-review.googlesource.com/483480Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44743}