Revert of Sandbox html_viewer on Linux.

components/font_service/public/cpp/BUILD.gn

Index: components/font_service/public/cpp/BUILD.gn
diff --git a/components/font_service/public/cpp/BUILD.gn b/components/font_service/public/cpp/BUILD.gn
deleted file mode 100644
index 38758b587bc0c419f3b3a7177c1dd74f0d7af9ba..0000000000000000000000000000000000000000
--- a/components/font_service/public/cpp/BUILD.gn
+++ /dev/null
@@ -1,26 +0,0 @@
-# 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.
-
-source_set("cpp") {
-  sources = [
-    "font_loader.cc",
-    "font_loader.h",
-    "font_service_thread.cc",
-    "font_service_thread.h",
-    "mapped_font_file.cc",
-    "mapped_font_file.h",
-  ]
-
-  deps = [
-    "../interfaces",
-    "//base",
-    "//mojo/application/public/cpp",
-    "//mojo/application/public/interfaces",
-    "//mojo/common",
-    "//mojo/platform_handle",
-    "//skia",
-    "//third_party/mojo/src/mojo/public/cpp/bindings",
-    "//third_party/mojo/src/mojo/public/cpp/system",
-  ]
-}