- u -

• UdpSocket2WorkerWindows : webrtc::test::UdpSocket2Windows
• UdpSocketManagerPosix : webrtc::test::UdpSocketPosix
• Uint128High64 : google::protobuf::uint128
• Uint128Low64 : google::protobuf::uint128
• UnicodeStringAppendable : UnicodeString
• UniqueElementData : WebCore::ElementData
• UniqueRef : WTF::UniqueRef< T >
• UnknownField : google::protobuf::UnknownFieldSet
• UnknownFieldSet : google::protobuf::UnknownField
• UnlinkedCodeBlock : JSC::BytecodeRewriter
• upb::google_opensource::GMR_Handlers : google::protobuf.internal::GeneratedMessageReflection , google::protobuf.internal::RepeatedPtrFieldBase
• URLParser : WebCore::URL