Add a fuzzer for the pseudoTCP implementation used by chromoting. This

webrtc/test/fuzzers/BUILD.gn

Index: webrtc/test/fuzzers/BUILD.gn
diff --git a/webrtc/test/fuzzers/BUILD.gn b/webrtc/test/fuzzers/BUILD.gn
index 9839a461d8a4ea8379daf76157cab0fd4bc15373..3615e8e4167c6f7350adca2b86a7bb35317d9cdb 100644
--- a/webrtc/test/fuzzers/BUILD.gn
+++ b/webrtc/test/fuzzers/BUILD.gn
@@ -221,4 +221,13 @@ if (!build_with_chromium) {
     seed_corpus = "corpora/stun-corpus"
     dict = "corpora/stun.tokens"
   }
+
+  webrtc_fuzzer_test("pseudotcp_parser_fuzzer") {
+    sources = [
+      "pseudotcp_parser_fuzzer.cc",
+    ]
+    deps = [
+      "../../p2p:rtc_p2p",
+    ]
+  }
 }