Add a command line tool for printing QUIC crypto handshake messages.

net/BUILD.gn

Index: net/BUILD.gn
diff --git a/net/BUILD.gn b/net/BUILD.gn
index 744743279b7e004615903a084ff20596f4c5301e..d632309e2d04f795cf71cf09b39f5937e6d2fd70 100644
--- a/net/BUILD.gn
+++ b/net/BUILD.gn
@@ -1348,6 +1348,20 @@ if (!is_ios) {
       "//third_party/protobuf:protobuf_lite",
     ]
   }
+  executable("crypto_message_printer") {
+    sources = [
+      "tools/quic/crypto_message_printer_bin.cc",
+    ]
+    deps = [
+      ":net",
+      ":simple_quic_tools",
+      "//base",
+      "//build/config/sanitizers:deps",
+      "//build/win:default_exe_manifest",
+      "//third_party/boringssl",
+      "//third_party/protobuf:protobuf_lite",
+    ]
+  }
 }
 
 bundle_data("net_unittests_bundle_data") {