Revert "Enable MidiManagerWinrt by default on Windows 10"

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 7a7abdaababd2049c206d5a8c6789c012dd1339c..1f1b32d53c79a47bda1a04d99d6f7a78c94f2641 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -1700,6 +1700,9 @@ const FeatureEntry kFeatureEntries[] = {
      IDS_FLAGS_MERGE_KEY_CHAR_EVENTS_DESCRIPTION, kOsWin,
      ENABLE_DISABLE_VALUE_TYPE(switches::kEnableMergeKeyCharEvents,
                                switches::kDisableMergeKeyCharEvents)},
+    {"use-winrt-midi-api", IDS_FLAGS_USE_WINRT_MIDI_API_NAME,
+     IDS_FLAGS_USE_WINRT_MIDI_API_DESCRIPTION, kOsWin,
+     FEATURE_VALUE_TYPE(media::midi::features::kMidiManagerWinrt)},
 #endif  // OS_WIN
 #if BUILDFLAG(ENABLE_BACKGROUND)
     {"enable-push-api-background-mode", IDS_FLAGS_PUSH_API_BACKGROUND_MODE_NAME,
@@ -2056,11 +2059,6 @@ const FeatureEntry kFeatureEntries[] = {
      IDS_FLAGS_ARC_BOOT_COMPLETED_DESCRIPTION, kOsCrOS,
      FEATURE_VALUE_TYPE(arc::kBootCompletedBroadcastFeature)},
 #endif
-#if defined(OS_WIN)
-    {"disable-winrt-midi-api", IDS_FLAGS_DISABLE_WINRT_MIDI_API_NAME,
-     IDS_FLAGS_DISABLE_WINRT_MIDI_API_DESCRIPTION, kOsWin,
-     SINGLE_DISABLE_VALUE_TYPE(switches::kDisableWinrtMidiApi)},
-#endif  // OS_WIN
     // NOTE: Adding new command-line switches requires adding corresponding
     // entries to enum "LoginCustomFlags" in histograms.xml. See note in
     // histograms.xml and don't forget to run AboutFlagsHistogramTest unit test.