[Mac/GN] Set up the component build.

third_party/WebKit/Source/core/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/chrome_build.gni")
 import("//build/config/ui.gni")
 import("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/bindings/core/v8/generated.gni")
 import("//third_party/WebKit/Source/bindings/modules/modules.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/generated.gni")
@@ skipping 246 matching lines @@
   }
 
   if (!is_android) {
     sources -= [
       "layout/LayoutThemeAndroid.cpp",
       "layout/LayoutThemeAndroid.h",
     ]
   }
 
   if (is_mac) {
-    libs += [ "Carbon.framework" ]
+    libs += [
+      "AppKit.framework",
+      "Carbon.framework",
+    ]
   } else {  # !is_mac
     sources -= [ "editing/commands/SmartReplaceCF.cpp" ]
   }
 }
 
 # GYP version: //third_party/WebKit/Source/core/core.gyp:webcore_rendering
 source_set("rendering") {
   # The files that go here are currently in "remaining".
 }
 
@@ skipping 739 matching lines @@
     "$blink_core_output_dir/{{source_name_part}}.h",
   ]
   args = [
     "{{source}}",
     rel_blink_core_gen_dir,
     bison_exe,
   ]
 
   deps = make_core_generated_deps
 }