Revert "Enable MidiManagerWinrt by default on Windows 10"

media/midi/midi_manager_win.cc

Index: media/midi/midi_manager_win.cc
diff --git a/media/midi/midi_manager_win.cc b/media/midi/midi_manager_win.cc
index d5b85d12b6f6685c9905624a8bfaf5e47b02b47e..5a589cdabe8c32614c4ebbd2ec04baa631c799c6 100644
--- a/media/midi/midi_manager_win.cc
+++ b/media/midi/midi_manager_win.cc
@@ -27,8 +27,8 @@
 #include <string>
 
 #include "base/bind.h"
-#include "base/command_line.h"
 #include "base/containers/hash_tables.h"
+#include "base/feature_list.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
@@ -1194,8 +1194,7 @@ void MidiManagerWin::OnReceiveMidiData(uint32_t port_index,
 }
 
 MidiManager* MidiManager::Create() {
-  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kDisableWinrtMidiApi) &&
+  if (base::FeatureList::IsEnabled(features::kMidiManagerWinrt) &&

[Takashi Toyoshima, 2016/10/26 21:29:54]

Does this compile?
Since we are outside the media namespace here, features::kMidiManagerWinrt
should not be resolved as media::midi::features::kMidiManagerWinrt.

Anyway, this should be fine once you fix the switch side namespace.

[Shao-Chuan Lee, 2016/10/27 08:26:16]

Done.

       base::win::GetVersion() >= base::win::VERSION_WIN10)
     return new MidiManagerWinrt();
   return new MidiManagerWin();