isTypeSupported   148 Source/modules/encryptedmedia/MediaKeys.cpp bool MediaKeys::isTypeSupported(const String& keySystem, const String& contentType)
isTypeSupported   200 Source/modules/mediasource/MediaSource.cpp bool MediaSource::isTypeSupported(const String& type)
isTypeSupported   194 Source/modules/mediasource/WebKitMediaSource.cpp bool WebKitMediaSource::isTypeSupported(const String& type)