Mac: Give app_shim code a nicer home

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("//components/nacl/nacl_defines.gni")
 # //build/config/android/rules.gni imports //tools/grit/grit_rule.gni, which
 # produces a conflict for the "grit" template so we have to only include one.
@@ skipping 212 matching lines @@
     sources += [
       "download/download_dir_policy_handler.cc",
       "download/download_dir_policy_handler.h",
     ]
   }
   if (is_mac) {
     sources += rebase_path(gypi_values.chrome_browser_mac_sources,
                            ".", "//chrome")
     deps += [
       #"app_shim"  TODO(GYP)
+      #"browser_app_shim"  TODO(GYP)
     ]
   }
   if (!toolkit_views) {
     deps -= [ "//components/native_app_window" ]
   }
   if (cld2_data_source == "component") {
     sources += [
       "component_updater/cld_component_installer.cc",
       "component_updater/cld_component_installer.h",
     ]
@@ skipping 685 matching lines @@
     ]
   }
 
   if (enable_wifi_bootstrapping) {
     sources += [
       "local_discovery/wifi/mock_wifi_manager.cc",
       "local_discovery/wifi/mock_wifi_manager.h",
     ]
   }
 }