Wrap the p2p transport API in a compile time flag.

content/content_renderer.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': 'content_renderer',
       'msvs_guid': '9AAA8CF2-9B3D-4895-8CB9-D70BBD125EAD',
       'type': '<(library)',
@@ skipping 46 matching lines @@
         'renderer/media/audio_renderer_impl.cc',
         'renderer/media/audio_renderer_impl.h',
         'renderer/media/gles2_video_decode_context.cc',
         'renderer/media/gles2_video_decode_context.h',
         'renderer/media/ipc_video_decoder.cc',
         'renderer/media/ipc_video_decoder.h',
         'renderer/navigation_state.cc',
         'renderer/navigation_state.h',
         'renderer/notification_provider.cc',
         'renderer/notification_provider.h',
-        'renderer/p2p/ipc_network_manager.cc',
-        'renderer/p2p/ipc_network_manager.h',
-        'renderer/p2p/ipc_socket_factory.cc',
-        'renderer/p2p/ipc_socket_factory.h',
-        'renderer/p2p/p2p_transport_impl.cc',
-        'renderer/p2p/p2p_transport_impl.h',
-        'renderer/p2p/socket_client.cc',
-        'renderer/p2p/socket_client.h',
-        'renderer/p2p/socket_dispatcher.cc',
-        'renderer/p2p/socket_dispatcher.h',
         'renderer/paint_aggregator.cc',
         'renderer/paint_aggregator.h',
         'renderer/pepper_platform_context_3d_impl.cc',
         'renderer/pepper_platform_context_3d_impl.h',
         'renderer/pepper_platform_video_decoder_impl.cc',
         'renderer/pepper_platform_video_decoder_impl.h',
         'renderer/pepper_plugin_delegate_impl.cc',
         'renderer/pepper_plugin_delegate_impl.h',
         'renderer/plugin_channel_host.cc',
         'renderer/plugin_channel_host.h',
@@ skipping 68 matching lines @@
         'renderer/websharedworkerrepository_impl.cc',
         'renderer/websharedworkerrepository_impl.h',
         'renderer/webworker_base.cc',
         'renderer/webworker_base.h',
         'renderer/webworker_proxy.cc',
         'renderer/webworker_proxy.h',
         'renderer/web_ui_bindings.cc',
         'renderer/web_ui_bindings.h',
       ],
       'conditions': [
+        ['p2p_apis==1', {
+          'sources': [
+            'renderer/p2p/ipc_network_manager.cc',
+            'renderer/p2p/ipc_network_manager.h',
+            'renderer/p2p/ipc_socket_factory.cc',
+            'renderer/p2p/ipc_socket_factory.h',
+            'renderer/p2p/p2p_transport_impl.cc',
+            'renderer/p2p/p2p_transport_impl.h',
+            'renderer/p2p/socket_client.cc',
+            'renderer/p2p/socket_client.h',
+            'renderer/p2p/socket_dispatcher.cc',
+            'renderer/p2p/socket_dispatcher.h',
+          ],
+        }],
         ['enable_gpu==1', {
           'dependencies': [
             '../gpu/gpu.gyp:gles2_c_lib',
           ],
           'sources': [
             'renderer/command_buffer_proxy.cc',
             'renderer/command_buffer_proxy.h',
           ],
         }],
         ['OS=="linux" or OS=="freebsd" or OS=="openbsd"', {
           'dependencies': [
             '../build/linux/system.gyp:gtk',
           ],
         }],
         ['OS=="mac"', {
           'sources!': [
             'common/process_watcher_posix.cc',
           ],
           'link_settings': {
             'mac_bundle_resources': [
               'renderer/renderer.sb',
             ],
           },
         }],
       ],
     },
   ],
 }