Land prep work to enable NaCl in the Linux x64 GN builds.

ppapi/shared_impl/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.
 
 component("shared_impl") {
   output_name = "ppapi_shared"
 
   sources = [
     "array_var.cc",
     "array_var.h",
@@ skipping 154 matching lines @@
     "//base:i18n",
     "//base/third_party/dynamic_annotations",
     "//gpu/command_buffer/client",
     "//gpu/command_buffer/client:gles2_cmd_helper",
     "//gpu/command_buffer/client:gles2_implementation",
     "//gpu/command_buffer/common",
     "//ipc",
     "//media:shared_memory_support",
     "//ppapi/c",
     "//ppapi/thunk",
-    "//skia",
     "//third_party/icu:icuuc",
-    "//ui/events:events_base",
-    "//ui/surface",
     "//url",
   ]
 
+  if (!is_nacl) {
+    deps += [
+      "//skia",
+      "//ui/events:events_base",
+      "//ui/surface",
+    ]
+  }
+
   if (is_mac) {
     libs = [ "QuartzCore.framework" ]
   }
 }
 
 source_set("test_support") {
   testonly = true
 
   sources = [
     "test_globals.cc",
     "test_globals.h",
     "unittest_utils.cc",
     "unittest_utils.h",
   ]
 
   deps = [
     "//base/test:test_support",
     "//ipc",
     "//ipc:test_support",
     "//ppapi/proxy",
     "//ppapi/shared_impl",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }