Decompose //extensions/browser/BUILD.gn

extensions/shell/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/features.gni")
 import("//build/config/ui.gni")
 
 # Technically, this directory should not depend on files from src/chrome, but
 # that's where the VERSION file is. This  should probably all be moved to
 # src/build.
@@ skipping 306 matching lines @@
 
   deps = [
     ":app_shell_lib",
     "//base",
     "//base/test:test_support",
     "//components/version_info",
     "//content/shell:content_shell_lib",
     "//content/test:test_support",
     "//extensions:test_support",
     "//extensions/browser",
+    "//extensions/browser/app_window",
     "//extensions/common",
   ]
 
   if (use_aura) {
     deps += [ "//ui/aura" ]
   }
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = []
 
   deps = [
     ":app_shell_lib",
     "//base",
     "//base/test:test_support",
     "//extensions/browser",
   ]
 
   if (is_chromeos) {
     deps += [
       "//chromeos:test_support",
       "//components/keyed_service/content",
     ]
   }
 }