Seperate NaCl switches to their own file.

chrome/nacl_common.gypi

Index: chrome/nacl_common.gypi
diff --git a/chrome/nacl_common.gypi b/chrome/nacl_common.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..0d2342cdbea41f12d0d75114ac7fb56d8999bd07
--- /dev/null
+++ b/chrome/nacl_common.gypi
@@ -0,0 +1,41 @@
+# 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.
+
+{
+  'targets': [
+    {
+      'target_name': 'nacl_switches',
+      'type': 'static_library',
+      'sources': [
+        'common/nacl_switches.cc',
+        'common/nacl_switches.h',
+      ],
+      'include_dirs': [
+        '..',
+      ],
+    },
+  ],
+  'conditions': [
+    ['OS=="win" and target_arch=="ia32"', {
+      'targets': [
+        {
+          'target_name': 'nacl_switches_win64',
+          'type': 'static_library',
+          'sources': [
+            'common/nacl_switches.cc',
+            'common/nacl_switches.h',
+          ],
+          'include_dirs': [
+            '..',
+          ],
+          'configurations': {
+            'Common_Base': {
+              'msvs_target_platform': 'x64',
+            },
+          },
+        },
+      ],
+    },],

[Mark Seaborn, 2013/06/21 13:35:13]

Nit: You can just write "}],"

+  ],
+}