Fix GN linking issues.

content/app/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.
 
 source_set("app") {
   sources = [
     "android/app_jni_registrar.cc",
     "android/app_jni_registrar.h",
     "android/child_process_service.cc",
     "android/child_process_service.h",
@@ skipping 10 matching lines @@
   configs += [ "//content:content_implementation" ]
 
   deps = [
     "//base",
     "//base:i18n",
     # This is needed by app/content_main_runner.cc
     # TODO(brettw) this shouldn't be here, only final executables should be
     # picking the allocator.
     "//base/allocator",
     "//content:export",
+    "//content/public/common",
     "//crypto",
     "//ui/base",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 
   if (is_win) {
     deps += [ "//sandbox" ]
   } else if (is_android) {
     sources -= [ "content_main.cc" ]
@@ skipping 12 matching lines @@
     ]
   } else {
     deps += [
       "//mojo/environment:chromium",
       "//mojo/public/interfaces/service_provider",
       "//mojo/service_manager",
       "//mojo/system",
     ]
   }
 }