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

extensions/shell/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("//extensions/shell/app_shell.gni")
 
 # Technically, this directory should not depend on files from src/chrome, but
 # that's where the VERSION file is. This  should probably all be moved to
 # src/build.
 import("//chrome/version.gni")
@@ skipping 87 matching lines @@
         "//components/nacl:renderer",
         "//components/nacl:switches",
       ]
       nacl_sources =
           rebase_path(app_shell_gypi_values.app_shell_lib_sources_nacl,
                       ".",
                       "//extensions/shell")
       sources += nacl_sources
     }
   }
+
+  if (enable_nacl) {
+    sources += [
+      "browser/shell_nacl_browser_delegate.cc",
+      "browser/shell_nacl_browser_delegate.h",
+    ]
+
+    deps += [
+      "//components/nacl",
+      "//components/nacl:nacl_browser",
+      "//components/nacl:nacl_common",
+      "//components/nacl:nacl_renderer",
+      "//components/nacl:nacl_switches",
+      "//components/nacl/renderer/plugin:nacl_trusted_plugin",
+    ]
+
+    if (is_linux) {
+      deps += [ "//components/nacl:nacl_helper" ]
+    }
+  }
 }
 
 if (!(is_chromeos && !use_ozone) && (!is_win || link_chrome_on_windows)) {
   executable("app_shell") {
     # testonly because :app_shell_lib is testonly. See :app_shell_lib comment.
     testonly = true
     sources = rebase_path(app_shell_gypi_values.app_shell_sources,
                           ".",
                           "//extensions/shell")
     deps = [
@@ skipping 61 matching lines @@
 
   if (is_win) {
     deps += [ "//base/allocator" ]
   }
 }
 
 process_version("version_header") {
   template_file = "common/version.h.in"
   output = "$target_gen_dir/common/version.h"
 }