namespace-concat in fbcode/quic

Summary:
Concatenate adjacent namespaces + format

This is a codemod. It was automatically generated and will be landed once it is approved and tests are passing in sandcastle.
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Autodiff project: nc
Autodiff partition: fbcode.quic
Autodiff bookmark: ad.nc.fbcode.quic

Reviewed By: hanidamlaj

Differential Revision: D65365244

fbshipit-source-id: 0bbaa7684d03caf8fc8eff3439a0865940398220

quic/codec/test/QuicWriteCodecTest.cpp

@@ -52,8 +52,7 @@ QuicFrame parseQuicFrame(
           receiveTimeStampsConfig));
 }
 
-namespace quic {
-namespace test {
+namespace quic::test {
 
 void setupCommonExpects(MockQuicPacketBuilder& pktBuilder) {
   EXPECT_CALL(pktBuilder, remainingSpaceInPkt()).WillRepeatedly(Invoke([&]() {
@@ -2434,5 +2433,4 @@ INSTANTIATE_TEST_SUITE_P(
         FrameType::ACK_RECEIVE_TIMESTAMPS));
 // Values(FrameType::ACK, FrameType::ACK_ECN,
 // FrameType::ACK_RECEIVE_TIMESTAMPS));
-} // namespace test
-} // namespace quic
+} // namespace quic::test