Make common depend on app_mode_app_support.

chrome/common/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("//tools/grit/grit_rule.gni")
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("../chrome_common.gypi") ],
                           "scope",
                           [ "../chrome_common.gypi" ])
@@ skipping 117 matching lines @@
     } else {
       sources +=
           rebase_path(gypi_values.chrome_common_networking_private_sources_nss,
                       ".",
                       "//chrome")
     }
   }
   if (is_mac) {
     sources +=
         rebase_path(gypi_values.chrome_common_mac_sources, ".", "//chrome")
+    deps += [ ":app_mode_app_support" ]
   }
 
   if (enable_nacl) {
     deps += [ "//components/nacl:nacl_common" ]
   }
 
   # Printing.
   if (enable_basic_printing || enable_print_preview) {
     deps += [
       "//components/printing/common:printing_common",
@@ skipping 164 matching lines @@
 
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   if (enable_extensions) {
     sources += [
       "extensions/extension_test_util.cc",
       "extensions/extension_test_util.h",
     ]
   }
 }
+
+# GN version: chrome/chrome.gyp:app_mode_app_support
+static_library("app_mode_app_support") {

[Nico, 2015/03/25 18:02:03]

(nit: i think gn uses source_set for most things instead of static_libraries.)

+  sources = [
+    "mac/app_mode_chrome_locator.h",
+    "mac/app_mode_chrome_locator.mm",
+    "mac/app_mode_common.h",
+    "mac/app_mode_common.mm",
+  ]
+
+  deps = [
+    ":constants",
+    "//base",
+  ]
+}