Adds a common way to initialize logging

mandoline/services/core_services/BUILD.gn

 # Copyright 2015 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.
 #
 # core_services should be thought of as a bundle of many of the services which
 # we ship with.
 
 import("//build/config/ui.gni")
 import("//build/toolchain/toolchain.gni")
 import("//mojo/public/mojo_application.gni")
@@ skipping 31 matching lines @@
     "main.cc",
   ]
 
   deps = [
     "//base",
     "//components/clipboard:lib",
     "//components/filesystem:lib",
     "//mandoline/tab:lib",
     "//mojo/application/public/cpp",
     "//mojo/common:tracing_impl",
+    "//mojo/logging",
     "//mojo/message_pump",
     "//mojo/services/tracing:lib",
     "//third_party/icu",
     "//third_party/mojo/src/mojo/public/cpp/bindings",
     "//url",
   ]
 
   if (!is_android) {
     sources += [ "application_delegate_factory_notandroid.cc" ]
     deps += [
@@ skipping 11 matching lines @@
 
   if (use_aura) {
     deps += [
       "//components/view_manager/public/cpp",
       "//mandoline/ui/desktop_ui:lib",
       "//mandoline/ui/omnibox:lib",
     ]
     sources += [ "application_delegate_factory_aura.cc" ]
   }
 }