Sending a data saver Pageload metrics pingback

components/data_reduction_proxy/proto/BUILD.gn

Index: components/data_reduction_proxy/proto/BUILD.gn
diff --git a/components/data_reduction_proxy/proto/BUILD.gn b/components/data_reduction_proxy/proto/BUILD.gn
index 6ed094b8d8d5019aac3b9f95bce40b7d3cd22193..83a4322cd39ac4f4f3be193961f0a9d12f447c3c 100644
--- a/components/data_reduction_proxy/proto/BUILD.gn
+++ b/components/data_reduction_proxy/proto/BUILD.gn
@@ -1,12 +1,13 @@
 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//third_party/protobuf/proto_library.gni")
 
 proto_library("data_reduction_proxy_proto") {
   sources = [
     "client_config.proto",
     "data_store.proto",
+    "pageload_metrics.proto",
   ]
 }