[zlib] Move DEFLATE_FILL_WINDOW_SSE2 back to x86_cpu_enable_simd

Move the feature back to x86_cpu_enable_simd (was x86_cpu_enable_sse2)
to green waterfall android-pie-x86-rel bot, issue 1073809.

Failure to be investigated [1], potential change of feature name, etc,
but green android-pie-x86-rel waterfall bots come first.

[1] Failing tests were in net::WebSocketDeflaterTest (see CL:2161015),
and WebSocketDeflateParametersCompatibilityTest (also CL:2161015). Bot
failure details recorded in issue 1073809.

Tbr: cblume
Bug: 1072308, 1073809
Change-Id: Ib55cf308250c958a80c1a8dffe279767372b4048
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2162509


Commit-Queue: Noel Gordon <noel@chromium.org>
Reviewed-by: Benoit L <lizeb@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#761894}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: ec864f4ecbc65d403b4e970c4411516e11e5d464