Add a chromium based simple QUIC client.

net/BUILD.gn

Index: net/BUILD.gn
diff --git a/net/BUILD.gn b/net/BUILD.gn
index b409817e0bb1cd40a16a44171f5ce9b832900e98..d0ec1cc5e7996a52e825c26e65728b0f5e4db18f 100644
--- a/net/BUILD.gn
+++ b/net/BUILD.gn
@@ -1265,6 +1265,24 @@ source_set("quic_tools") {
   ]
 }
 
+executable("simple_quic_client") {
+  testonly = true
+  sources = [
+    "tools/quic/quic_simple_client.cc",
+    "tools/quic/quic_simple_client.h",
+    "tools/quic/quic_simple_client_bin.cc",
+    "tools/quic/quic_simple_client_session.cc",
+    "tools/quic/quic_simple_client_session.h",
+    "tools/quic/quic_simple_client_stream.cc",
+    "tools/quic/quic_simple_client_stream.h",
+  ]
+  deps = [
+    ":net",
+    "//base",
+    "//url",
+  ]
+}
+
 # TODO(GYP) make this compile on Android, we need some native test deps done.
 # TODO(GYP) Also doesn't work on Windows; dependency on boringssl is wrong.
 # TODO(GYP) Also doesn't work on Mac, need to figure out why not.