[NTPSnippets] Show all downloads on the NTP (3/3): Downloads provider.

chrome/browser/ntp_snippets/BUILD.gn

Index: chrome/browser/ntp_snippets/BUILD.gn
diff --git a/components/ntp_snippets/remote/proto/BUILD.gn b/chrome/browser/ntp_snippets/BUILD.gn
similarity index 61%
copy from components/ntp_snippets/remote/proto/BUILD.gn
copy to chrome/browser/ntp_snippets/BUILD.gn
index 95ba179662570ba5a461f1b9c9f060babb058eaa..474a6f8fb15fd6ee5acdf9737bf2577ee4037588 100644
--- a/components/ntp_snippets/remote/proto/BUILD.gn
+++ b/chrome/browser/ntp_snippets/BUILD.gn
@@ -2,10 +2,12 @@
 # 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("proto") {
+source_set("test_support") {
+  testonly = true
   sources = [
-    "ntp_snippets.proto",
+    "fake_download_item.cc",
+    "fake_download_item.h",
   ]
+
+  deps = []
 }