Use SK_DISABLE_DEFERRED_PROXIES to only disable deferred proxies for Chrome

This relies on https://chromium-review.googlesource.com/c/chromium/src/+/700475 (Readd SK_DISABLE_DEFERRED_PROXIES flag) landing in Chrome first.

It refines the changes made in: https://skia-review.googlesource.com/c/skia/+/54004 (Temporarily disable deferred texture proxies)

Change-Id: I12af50349516d32f74cd7f7dfd25a668284f64fa
Reviewed-on: https://skia-review.googlesource.com/55100
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
3 files changed