Reland of name kDisableGestureRequirementForMediaPlayback and make it a test-only flag.

content/browser/media/media_source_browsertest.cc

 // Copyright (c) 2013 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.
 
 #include "base/command_line.h"
 #include "build/build_config.h"
 #include "content/browser/media/media_browsertest.h"
-#include "content/public/common/content_switches.h"
+#include "media/base/media_switches.h"
 #include "media/media_features.h"
 
 #if defined(OS_ANDROID)
 #include "base/android/build_info.h"
 #endif
 
 // Common media types.
 #if BUILDFLAG(USE_PROPRIETARY_CODECS) && !defined(OS_ANDROID)
 const char kAAC_ADTS_AudioOnly[] = "audio/aac";
 #endif
@@ skipping 18 matching lines @@
                           const std::string& media_type,
                           const std::string& expectation) {
     base::StringPairs query_params;
     query_params.push_back(std::make_pair("mediaFile", media_file));
     query_params.push_back(std::make_pair("mediaType", media_type));
     RunMediaTestPage("media_source_player.html", query_params, expectation,
                      false);
   }
 
   void SetUpCommandLine(base::CommandLine* command_line) override {
-    command_line->AppendSwitch(
-        switches::kDisableGestureRequirementForMediaPlayback);
+    command_line->AppendSwitch(switches::kIgnoreAutoplayRestrictionsForTests);
   }
 };
 
 IN_PROC_BROWSER_TEST_F(MediaSourceTest, Playback_VideoAudio_WebM) {
   TestSimplePlayback("bear-320x240.webm", kWebMAudioVideo, kEnded);
 }
 
 IN_PROC_BROWSER_TEST_F(MediaSourceTest, Playback_VideoOnly_WebM) {
   TestSimplePlayback("bear-320x240-video-only.webm", kWebMVideoOnly, kEnded);
 }
@@ skipping 50 matching lines @@
 #endif
 
 #if BUILDFLAG(USE_PROPRIETARY_CODECS)
 #if BUILDFLAG(ENABLE_MSE_MPEG2TS_STREAM_PARSER)
 IN_PROC_BROWSER_TEST_F(MediaSourceTest, Playback_AudioVideo_Mp2t) {
   TestSimplePlayback("bear-1280x720.ts", kMp2tAudioVideo, kEnded);
 }
 #endif
 #endif
 }  // namespace content