Add chrome/plugin and chrome/utility to GN build.

ui/compositor/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/ui.gni")
 
 component("compositor") {
   sources = [
     "compositor.cc",
     "compositor.h",
@@ skipping 86 matching lines @@
     "test/test_utils.h",
   ]
 
   deps = [
     ":compositor",
     "//base",
     "//cc",
     "//cc:test_support",
     "//skia",
     "//testing/gtest",
-    #"//third_party/WebKit/public:blink_minimal",  TODO(GYP)
+    "//third_party/WebKit/public:blink_minimal",
     "//ui/base",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/gl",
-    #'<(DEPTH)/webkit/common/gpu/webkit_gpu.gyp:webkit_gpu',  TODO(GYP)
+    "//webkit/common/gpu",
   ]
 
   if (use_x11) {
     configs += [ "//build/config/linux:x11" ]
     deps += [ "//ui/gfx:gfx_x11" ]
   }
 }
 
 # TODO(GYP) enable this when all dependencies are complete and it links.
 #test("compositor_unittests") {
@@ skipping 21 matching lines @@
 #    "//ui/gfx",
 #    "//ui/gfx/geometry",
 #    "//ui/gl",
 #    "//ui/resources",
 #  ]
 #
 #  if (is_linux) {
 #    #deps += [ "//third_party/mesa:osmesa" ]  # TODO(GYP)
 #  }
 #}