Web MIDI: convert Android native API switch to a field trial

chrome/browser/about_flags.cc

 // Copyright (c) 2012 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 "chrome/browser/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 1666 matching lines @@
 #if defined(OS_ANDROID)
     {"enable-ntp-popular-sites", IDS_FLAGS_NTP_POPULAR_SITES_NAME,
      IDS_FLAGS_NTP_POPULAR_SITES_DESCRIPTION, kOsAndroid,
      ENABLE_DISABLE_VALUE_TYPE(ntp_tiles::switches::kEnableNTPPopularSites,
                                ntp_tiles::switches::kDisableNTPPopularSites)},
     {"ntp-switch-to-existing-tab", IDS_FLAGS_NTP_SWITCH_TO_EXISTING_TAB_NAME,
      IDS_FLAGS_NTP_SWITCH_TO_EXISTING_TAB_DESCRIPTION, kOsAndroid,
      MULTI_VALUE_TYPE(kNtpSwitchToExistingTabChoices)},
     {"use-android-midi-api", IDS_FLAGS_USE_ANDROID_MIDI_API_NAME,
      IDS_FLAGS_USE_ANDROID_MIDI_API_DESCRIPTION, kOsAndroid,
-     SINGLE_VALUE_TYPE(switches::kUseAndroidMidiApi)},
+     FEATURE_VALUE_TYPE(midi::features::kMidiManagerAndroid)},
 #endif  // OS_ANDROID
 #if defined(OS_WIN)
     {"trace-export-events-to-etw", IDS_FLAGS_TRACE_EXPORT_EVENTS_TO_ETW_NAME,
      IDS_FLAGS_TRACE_EXPORT_EVENTS_TO_ETW_DESRIPTION, kOsWin,
      SINGLE_VALUE_TYPE(switches::kTraceExportEventsToETW)},
     {"merge-key-char-events", IDS_FLAGS_MERGE_KEY_CHAR_EVENTS_NAME,
      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,
@@ skipping 603 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags