Revert of Rename kDisableGestureRequirementForMediaPlayback and make it a test-only flag.

media/base/android/java/src/org/chromium/media/MediaSwitches.java

Index: media/base/android/java/src/org/chromium/media/MediaSwitches.java
diff --git a/media/base/android/java/src/org/chromium/media/MediaSwitches.java b/media/base/android/java/src/org/chromium/media/MediaSwitches.java
deleted file mode 100644
index ec8b2ee9931db5cbbf08f3b63737958674e6fa2c..0000000000000000000000000000000000000000
--- a/media/base/android/java/src/org/chromium/media/MediaSwitches.java
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright 2017 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.
-
-package org.chromium.media;
-
-/**
- * Contains command line switches that are specific to the media layer.
- */
-public abstract class MediaSwitches {
-    // Ignores all autoplay restrictions. It will ignore the current autoplay policy and all
-    // restrictions such as playback in a background tab. It should only be enabled for testing.
-    public static final String IGNORE_AUTOPLAY_RESTRICTIONS_FOR_TESTS =
-            "ignore-autoplay-restrictions";
-
-    // Prevents instantiation.
-    private MediaSwitches() {}
-}