Restructure public side of network service.

mojo/services/network/public/cpp/BUILD.gn

Index: mojo/services/network/public/cpp/BUILD.gn
diff --git a/mojo/services/public/cpp/network/BUILD.gn b/mojo/services/network/public/cpp/BUILD.gn
similarity index 88%
rename from mojo/services/public/cpp/network/BUILD.gn
rename to mojo/services/network/public/cpp/BUILD.gn
index 5f6ab06fa9550fdeef9211198cb59f4d2ca45155..565f7153fa706dab8b9d122eab9cdbfc85b633b1 100644
--- a/mojo/services/public/cpp/network/BUILD.gn
+++ b/mojo/services/network/public/cpp/BUILD.gn
@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("network") {
+source_set("cpp") {
   sources = [
     "udp_socket_wrapper.cc",
     "udp_socket_wrapper.h",
@@ -19,6 +19,6 @@ source_set("network") {
     "//mojo/environment:chromium",
     "//mojo/public/c/system",
     "//mojo/public/cpp/system",
-    "//mojo/services/public/interfaces/network",
+    "//mojo/services/network/public/interfaces",
   ]
 }