Add Skia to the GN build.

build/config/BUILD.gn

 # Copyright (c) 2013 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")
 
 declare_args() {
   # When set, turns off the (normally-on) iterator debugging and related stuff
@@ skipping 26 matching lines @@
       "ENABLE_PLUGIN_INSTALLATION=1",
       "ENABLE_SESSION_SERVICE=1",
       "ENABLE_THEMES=1",
       "ENABLE_AUTOFILL_DIALOG=1",
       "ENABLE_BACKGROUND=1",
       "ENABLE_GOOGLE_NOW=1",
       "ENABLE_CAPTIVE_PORTAL_DETECTION=1",
       "ENABLE_APP_LIST=1",
       "ENABLE_SETTINGS_APP=1",
       "ENABLE_MANAGED_USERS=1",
+      "ENABLE_SERVICE_DISCOVERY=1",
+      "USE_MOJO=1",
       "V8_DEPRECATION_WARNINGS",  # Don't use deprecated V8 APIs anywhere.
+      # Temporary suppression until Blink code can be removed.
+      "BLINK_SCALE_FILTERS_AT_RECORD_TIME",
   ]
 
   if (cld_version > 0) {
     defines += [ "CLD_VERSION=$cld_version" ]
   }
   if (enable_mdns) {
     defines += [ "ENABLE_MDNS=1" ]
   }
   if (enable_pepper_cdms) {
     # TODO(brettw) should probably be "=1"
@@ skipping 147 matching lines @@
       "CoreText.framework",
       "Foundation.framework",
       "UIKit.framework",
     ]
   } else if (is_linux) {
     libs = [
       "dl",
     ]
   }
 }