Remove app_installer code.

chrome/app_installer/BUILD.gn

Index: chrome/app_installer/BUILD.gn
diff --git a/chrome/app_installer/BUILD.gn b/chrome/app_installer/BUILD.gn
deleted file mode 100644
index 90b15f6720561513a23b20af1150beeedc282aac..0000000000000000000000000000000000000000
--- a/chrome/app_installer/BUILD.gn
+++ /dev/null
@@ -1,60 +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.
-
-import("//testing/test.gni")
-
-assert(is_win)
-
-executable("app_installer") {
-  sources = [
-    "win/app_installer_main.cc",
-  ]
-
-  configs -= [ "//build/config/win:console" ]
-  configs += [ "//build/config/win:windowed" ]
-
-  deps = [
-    ":util",
-    "//base",
-    "//mojo/environment:chromium",
-  ]
-
-  # TODO(GYP) manifest.
-}
-
-source_set("util") {
-  sources = [
-    "win/app_installer_util.cc",
-    "win/app_installer_util.h",
-  ]
-
-  deps = [
-    "//base",
-    "//chrome/common",
-    "//chrome/common:constants",
-    "//chrome/installer/launcher_support",
-    "//chrome/installer/util",
-    "//chrome/installer/util:strings",
-    "//content/public/common",
-    "//net",
-    "//third_party/omaha:extractor",
-  ]
-}
-
-test("app_installer_unittests") {
-  sources = [
-    "win/app_installer_util_unittest.cc",
-  ]
-
-  deps = [
-    ":util",
-    "//base",
-    "//base/test:run_all_unittests",
-    "//mojo/environment:chromium",
-    "//net:test_support",
-    "//testing/gtest",
-  ]
-
-  # TODO(GYP) manifest
-}