Remove some dead app host code.

chrome/browser/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/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//native_client/build/config/nacl_defines.gni")
 import("//tools/grit/grit_rule.gni")
 
@@ skipping 486 matching lines @@
   #  "msvs_shard": 4,
   #}],
 
   if (is_win) {
     sources += rebase_path(gypi_values.chrome_browser_win_sources,
                            ".", "//chrome")
     deps += [
       "//third_party/wtl",
       #"chrome_process_finder",  TODO(GYP)
       #"installer_util_strings",  TODO(GYP)
-      #"launcher_support",  TODO(GYP)
       #"../chrome/chrome.gyp:chrome_version_header",  TODO(GYP)
       #"../chrome_elf/chrome_elf.gyp:chrome_elf",  TODO(GYP)
       #"../chrome_elf/chrome_elf.gyp:chrome_elf_constants",  TODO(GYP)
       #"../chrome_elf/chrome_elf.gyp:dll_hash",  TODO(GYP)
       #"../google_update/google_update.gyp:google_update",  TODO(GYP)
       #"../third_party/iaccessible2/iaccessible2.gyp:iaccessible2",  TODO(GYP)
       #"../third_party/isimpledom/isimpledom.gyp:isimpledom",  TODO(GYP)
       #"../ui/metro_viewer/metro_viewer.gyp:metro_viewer_messages",  TODO(GYP)
       #"../ui/views/controls/webview/webview.gyp:webview",  TODO(GYP)
       #"../ui/views/views.gyp:views",  TODO(GYP)
@@ skipping 138 matching lines @@
 # TODO(GYP) write internal action
 if (false) {  #if (is_chrome_branded) {
   action("chrome_internal_resources_gen") {
     # TODO(GYP)
   }
 } else {
   group("chrome_internal_resources_gen") {
     # Empty placeholder.
   }
 }