MidiManagerWinrt as base::FeatureList feature

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index bb169e59b584585740aacd94bef438f48402eee3..273be8179ae8f94bb80e7a382adbc27e44eea777 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -70,6 +70,7 @@
 #include "content/public/common/features.h"
 #include "gin/public/gin_features.h"
 #include "media/base/media_switches.h"
+#include "media/midi/midi_features.h"
 #include "media/midi/midi_switches.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/compositor/compositor_switches.h"
@@ -1754,7 +1755,7 @@ const FeatureEntry kFeatureEntries[] = {
                                switches::kDisableMergeKeyCharEvents)},
     {"use-winrt-midi-api", IDS_FLAGS_USE_WINRT_MIDI_API_NAME,
      IDS_FLAGS_USE_WINRT_MIDI_API_DESCRIPTION, kOsWin,
-     SINGLE_VALUE_TYPE(switches::kUseWinrtMidiApi)},
+     FEATURE_VALUE_TYPE(features::kUseWinrtMidiApi)},
 #endif  // defined(OS_WIN)
 #if BUILDFLAG(ENABLE_BACKGROUND)
     {"enable-push-api-background-mode", IDS_FLAGS_PUSH_API_BACKGROUND_MODE_NAME,