PPAPI/NaCl: Make NaClIPCAdapter transfer handles more generally

ppapi/ppapi_ipc.gypi

Index: ppapi/ppapi_ipc.gypi
diff --git a/ppapi/ppapi_ipc.gypi b/ppapi/ppapi_ipc.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..926e0e240fcaec2dbbfb69b33c7637c19478eadb
--- /dev/null
+++ b/ppapi/ppapi_ipc.gypi
@@ -0,0 +1,44 @@
+# Copyright (c) 2012 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.
+
+{
+  'target_defaults': {
+    'variables': {
+      'nacl_win64_target': 0,
+      'ppapi_ipc_target': 0,
+    },
+    'target_conditions': [
+      # This part is shared between the targets defined below.
+      ['ppapi_ipc_target==1', {
+        'sources': [
+          'proxy/pepper_file_messages.cc',
+          'proxy/pepper_file_messages.h',
+          'proxy/ppapi_messages.cc',
+          'proxy/ppapi_messages.h',
+          'proxy/ppapi_param_traits.cc',
+          'proxy/ppapi_param_traits.h',
+          'proxy/resource_message_params.cc',
+          'proxy/resource_message_params.h',
+          'proxy/serialized_flash_menu.cc',
+          'proxy/serialized_flash_menu.h',
+          'proxy/serialized_structs.cc',
+          'proxy/serialized_structs.h',
+          'proxy/serialized_var.cc',
+          'proxy/serialized_var.h',
+          'proxy/var_serialization_rules.h',
+        ],
+        'include_dirs': [
+          '..',
+        ],
+        'target_conditions': [
+          ['>(nacl_untrusted_build)==1' or '>(nacl_win64_target)==1', {
+            'sources!': [
+              'proxy/serialized_flash_menu.cc',
+            ],
+          }],
+        ],
+      }],
+    ],
+  },
+}