Create a field trial for Seccomp-BPF on Android.

content/public/common/content_features.h

Index: content/public/common/content_features.h
diff --git a/content/public/common/content_features.h b/content/public/common/content_features.h
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+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file defines all the public base::FeatureList features for the content
+// module.
+
+#ifndef CONTENT_PUBLIC_COMMON_CONTENT_FEATURES_H_
+#define CONTENT_PUBLIC_COMMON_CONTENT_FEATURES_H_
+
+#include "build/build_config.h"
+#include "base/feature_list.h"
+#include "content/common/content_export.h"
+
+namespace content {
+
+#if defined(OS_ANDROID)
+// FeatureList definition for the Seccomp field trial.
+CONTENT_EXPORT extern const base::Feature kSeccompSandboxAndroidFeature;
+#endif  // defined(OS_ANDROID)
+
+// DON'T ADD RANDOM STUFF HERE. Put it in the main section above in
+// alphabetical order, or in one of the ifdefs (also in order in each section).
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_COMMON_CONTENT_FEATURES_H_