Move RegisterContentSchemes from public url_constants into non-public url_schemes.

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',
     '../build/temp_gyp/googleurl.gyp:googleurl',
     '../gpu/gpu.gyp:gles2_implementation',
     '../gpu/gpu.gyp:gpu_ipc',
@@ skipping 295 matching lines @@
     'common/socket_stream_handle_data.h',
     'common/socket_stream_messages.h',
     'common/speech_recognition_messages.h',
     'common/ssl_status_serialization.cc',
     'common/ssl_status_serialization.h',
     'common/swapped_out_messages.cc',
     'common/swapped_out_messages.h',
     'common/text_input_client_messages.h',
     'common/unix_domain_socket_posix.cc',
     'common/unix_domain_socket_posix.h',
+    'common/url_schemes.cc',
+    'common/url_schemes.h',
     'common/utility_messages.h',
     'common/view_messages.h',
     'common/view_message_enums.h',
     'common/web_database_observer_impl.cc',
     'common/web_database_observer_impl.h',
     'common/webkitplatformsupport_impl.cc',
     'common/webkitplatformsupport_impl.h',
     'common/webmessageportchannel_impl.cc',
     'common/webmessageportchannel_impl.h',
     'common/worker_messages.h',
@@ skipping 125 matching lines @@
         '../build/extract_from_cab.py',
         '..\\third_party\\directxsdk\\files\\Redist\\<(input)',
         '<(output)',
         '<(PRODUCT_DIR)',
         ],
       },
      ]
     }]
   ],
 }