Revert "Add chrome_proxy.exe target on Windows"

This reverts commit 86e7ed69a96f03ffcbb6af63d632f7951bf34b28.

Reason for revert: Broke Chrome Canary update while the browser is open.
Bug: 912716

Original change's description:
> Add chrome_proxy.exe target on Windows
>
> This change adds a new executable to Windows called chrome_proxy.exe which
> opens chrome.exe with all arguments forwarded.
>
> In a future patch bookmark app shortcuts will be updated to point to
> chrome_proxy.exe instead of chrome.exe so they don't pick up the
> chrome.VisualElementsManifest.xml file when pinned to the Windows 10
> start menu. This fixes a bug where pinned bookmark app shortcuts all
> use the Chrome logo instead of their own.
>
> Bug: 732357
> Change-Id: I551093f6f111041b424d30ec3f829fa6a06a265c
> Reviewed-on: https://chromium-review.googlesource.com/c/1362695
> Reviewed-by: Greg Thompson <grt@chromium.org>
> Reviewed-by: Lei Zhang <thestig@chromium.org>
> Commit-Queue: Alan Cutter <alancutter@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#614177}

TBR=thestig@chromium.org,alancutter@chromium.org,mgiuca@chromium.org,grt@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.
NOPRESUBMIT=TRUE # TBR doesn't apply because this revert touches an OWNERS file.

Bug: 732357
Change-Id: I73cddef3173e3abc22f8c8c4720d84f9a9069ab1
Reviewed-on: https://chromium-review.googlesource.com/c/1366471
Commit-Queue: Alan Cutter <alancutter@chromium.org>
Reviewed-by: Alan Cutter <alancutter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#614632}
23 files changed