Wrap the p2p transport API in a compile time flag.

ppapi/ppapi_tests.gypi

 # Copyright (c) 2011 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': 'ppapi_example',
       'dependencies': [
         'ppapi_cpp'
@@ skipping 206 matching lines @@
         'tests/test_graphics_2d.h',
         'tests/test_image_data.cc',
         'tests/test_image_data.h',
         'tests/test_paint_aggregator.cc',
         'tests/test_paint_aggregator.h',
         'tests/test_post_message.cc',
         'tests/test_post_message.h',
         'tests/test_scrollbar.cc',
         'tests/test_scrollbar.h',
         'tests/test_struct_sizes.c',
-        'tests/test_transport.cc',
-        'tests/test_transport.h',
         'tests/test_url_loader.cc',
         'tests/test_url_loader.h',
         'tests/test_url_util.cc',
         'tests/test_url_util.h',
         'tests/test_utils.cc',
         'tests/test_utils.h',
         'tests/test_video_decoder.cc',
         'tests/test_video_decoder.h',
 
         # Deprecated test cases.
@@ skipping 12 matching lines @@
             '_CRT_NONSTDC_NO_WARNINGS',
             '_CRT_NONSTDC_NO_DEPRECATE',
             '_SCL_SECURE_NO_DEPRECATE',
           ],
         }],
         ['OS=="mac"', {
           'mac_bundle': 1,
           'product_name': 'ppapi_tests',
           'product_extension': 'plugin',
         }],
+        ['p2p_apis==1', {
+          'sources': [
+            'tests/test_transport.cc',
+            'tests/test_transport.h',
+          ],
+        }],
       ],
 # TODO(dmichael):  Figure out what is wrong with the script on Windows and add
 #                  it as an automated action.
 #      'actions': [
 #        {
 #          'action_name': 'generate_ppapi_include_tests',
 #          'inputs': [],
 #          'outputs': [
 #            'tests/test_c_includes.c',
 #            'tests/test_cc_includes.cc',
@@ skipping 27 matching lines @@
         'proxy/plugin_dispatcher_unittest.cc',
         'proxy/plugin_resource_tracker_unittest.cc',
         'proxy/plugin_var_tracker_unittest.cc',
         'proxy/ppapi_proxy_test.cc',
         'proxy/ppapi_proxy_test.h',
         'proxy/serialized_var_unittest.cc',
       ],
     },
   ],
 }