RuntimeEnabledFeatures shouldn't be used from inside of /platform
<rdar://problem/72539739>
Created attachment 416594 [details] Patch
Comment on attachment 416594 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=416594&action=review > Source/WebCore/platform/audio/PlatformMediaSessionManager.h:210 > + static bool m_webMFormatReaderEnabled; Ok as is. New C++17 hotness: mark inline + add initializer.
This was rolled into r271194.