Only changes comments. Replace "CID" with "connection id" in various

net/quic/quic_connection_test.cc

Index: net/quic/quic_connection_test.cc
diff --git a/net/quic/quic_connection_test.cc b/net/quic/quic_connection_test.cc
index 31ea1a6f4d78b24593fb8ddfab1a0793f85723ee..2eed176c01e83dccab36a20f7f48975d92e8cacb 100644
--- a/net/quic/quic_connection_test.cc
+++ b/net/quic/quic_connection_test.cc
@@ -3224,10 +3224,10 @@ TEST_P(QuicConnectionTest, LoopThroughSendingPacketsWithTruncation) {
             connection_.SendStreamDataWithString(
                 3, payload, 0, !kFin, nullptr).bytes_consumed);
   // Track the size of the second packet here.  The overhead will be the largest
-  // we see in this test, due to the non-truncated CID.
+  // we see in this test, due to the non-truncated connection id.
   size_t non_truncated_packet_size = writer_->last_packet_size();
 
-  // Change to a 4 byte CID.
+  // Change to a 4 byte connection id.
   QuicConfig config;
   QuicConfigPeer::SetReceivedBytesForConnectionId(&config, 4);
   connection_.SetFromConfig(config);
@@ -3240,8 +3240,7 @@ TEST_P(QuicConnectionTest, LoopThroughSendingPacketsWithTruncation) {
   // headers here are also 4 byte smaller.
   EXPECT_EQ(non_truncated_packet_size, writer_->last_packet_size() + 8);
 
-
-  // Change to a 1 byte CID.
+  // Change to a 1 byte connection id.
   QuicConfigPeer::SetReceivedBytesForConnectionId(&config, 1);
   connection_.SetFromConfig(config);
   EXPECT_CALL(*send_algorithm_, OnPacketSent(_, _, _, _, _)).Times(2);
@@ -3251,7 +3250,7 @@ TEST_P(QuicConnectionTest, LoopThroughSendingPacketsWithTruncation) {
   // Just like above, we save 7 bytes on payload, and 7 on truncation.
   EXPECT_EQ(non_truncated_packet_size, writer_->last_packet_size() + 7 * 2);
 
-  // Change to a 0 byte CID.
+  // Change to a 0 byte connection id.
   QuicConfigPeer::SetReceivedBytesForConnectionId(&config, 0);
   connection_.SetFromConfig(config);
   EXPECT_CALL(*send_algorithm_, OnPacketSent(_, _, _, _, _)).Times(2);