Modify GN feature args for Fuchsia.

Turn off some features when is_fuchsia=true. The features may be
re-added in the future as progress continues on the Chromium port
and the OS itself.

It's necessary for bringing headless_shell to a buildable state.


R: scottmg@chromium.org,thakis@chromium.org
Bug: 750917
Change-Id: I7011dfa559474d7eacce9482ae02c3330d113e94
Reviewed-on: https://chromium-review.googlesource.com/596621
Commit-Queue: Kevin Marshall <kmarshall@chromium.org>
Reviewed-by: Scott Graham <scottmg@chromium.org>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Alexander Timin <altimin@chromium.org>
Reviewed-by: Sami Kyöstilä <skyostil@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#492531}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 0e0bd52f773b7e06fa9237154110d9963d5aea03
diff --git a/features/features.gni b/features/features.gni
index ac17e1f..560d1ec 100644
--- a/features/features.gni
+++ b/features/features.gni
@@ -7,5 +7,5 @@
 import("//build/config/features.gni")
 
 declare_args() {
-  enable_plugins = !is_android && !is_ios && !is_chromecast
+  enable_plugins = !is_android && !is_ios && !is_chromecast && !is_fuchsia
 }