Add creation of ServiceManager to Content (2nd try)

content/content_common.gypi

 # 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../components/tracing.gyp:tracing',
     '../net/net.gyp:net',
     '../skia/skia.gyp:skia',
@@ skipping 505 matching lines @@
     ['use_mojo==0', {
       'sources!': [
         'common/mojo/mojo_channel_init.cc',
         'common/mojo/mojo_channel_init.h',
       ],
     }, {
       'dependencies': [
         '../mojo/mojo.gyp:mojo_environment_chromium',
         '../mojo/mojo.gyp:mojo_system',
         '../mojo/mojo.gyp:mojo_system_impl',
-      ],
+     ],
     }],
     ['OS=="mac"', {
       'dependencies': [
         '../webkit/webkit_resources.gyp:webkit_resources',
       ],
       'sources': [
         'common/gpu/client/gpu_memory_buffer_impl_io_surface.cc',
         'common/gpu/client/gpu_memory_buffer_impl_io_surface.h',
       ],
       'sources!': [
@@ skipping 217 matching lines @@
         'common/sandbox_linux/bpf_renderer_policy_linux.cc',
         'common/sandbox_linux/bpf_renderer_policy_linux.h',
         'common/sandbox_linux/sandbox_bpf_base_policy_linux.cc',
         'common/sandbox_linux/sandbox_bpf_base_policy_linux.h',
       ],
     }, {
       'defines': ['USE_SECCOMP_BPF'],
     }],
   ],
 }