[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/services/preferences/BUILD.gn b/chrome/browser/ntp_snippets/BUILD.gn
similarity index 62%
copy from services/preferences/BUILD.gn
copy to chrome/browser/ntp_snippets/BUILD.gn
index 8640a9194ee55c9b44ec04a8d23edbca2a15ee48..474a6f8fb15fd6ee5acdf9737bf2577ee4037588 100644
--- a/services/preferences/BUILD.gn
+++ b/chrome/browser/ntp_snippets/BUILD.gn
@@ -2,9 +2,12 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-group("tests") {
+source_set("test_support") {
   testonly = true
-  deps = [
-    "//services/preferences/public/cpp/tests",
+  sources = [
+    "fake_download_item.cc",
+    "fake_download_item.h",
   ]
+
+  deps = []
 }