Migrate components/data_reduction_proxy to Mojo interfaces.

net/base/mojo/net_base.mojom

Index: net/base/mojo/net_base.mojom
diff --git a/url/mojo/origin.mojom b/net/base/mojo/net_base.mojom
similarity index 75%
copy from url/mojo/origin.mojom
copy to net/base/mojo/net_base.mojom
index 884357ba37a1541708da061864e4620059f69408..7326b304ec2de0403fcd0a3e39b205cd9e0c0673 100644
--- a/url/mojo/origin.mojom
+++ b/net/base/mojo/net_base.mojom
@@ -2,11 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-module url.mojom;
+module net.mojom;
 
-struct Origin {
-  string scheme;
+struct HostPortPair {
   string host;
   uint16 port;
-  bool unique;
 };