Move tracked prefs into services/preferences/tracked.

chrome/test/BUILD.gn

 # Copyright 2014 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("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 3459 matching lines @@
   data_deps = []
 
   data = [
     "data/",
     "//base/test/data/",
     "//chrome/third_party/mock4js/",
     "//components/test/data/",
     "//extensions/test/data/",
     "//google_apis/test/data/",
     "//net/tools/testserver/",
+    "//services/preferences/public/cpp/tracked",

[gab, 2017/03/29 16:27:56]

Why is this needed in as a data reference?

[Sam McNally, 2017/03/30 02:23:22]

I'm not sure. Removed it.

     "//third_party/accessibility-audit/axs_testing.js",
     "//third_party/chaijs/chai.js",
     "//third_party/hunspell_dictionaries/",
     "//third_party/pyftpdlib/",
     "//third_party/pywebsocket/",
     "//third_party/tlslite/",
     "//third_party/zlib/google/test/data/",
     "//tools/metrics/histograms/histograms.xml",
     "$root_out_dir/pyproto/google/",
   ]
@@ skipping 1733 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }