Move flash clipboard to the new proxy and add custom format support

ppapi/ppapi_shared.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.
 
 {
   'variables': {
     'conditions': [
       ['inside_chromium_build==0', {
         'webkit_src_dir': '../../../..',
       },{
@@ skipping 10 matching lines @@
       ['ppapi_shared_target==1', {
         'sources': [
           'shared_impl/array_writer.cc',
           'shared_impl/array_writer.h',
           'shared_impl/callback_tracker.cc',
           'shared_impl/callback_tracker.h',
           'shared_impl/file_path.cc',
           'shared_impl/file_path.h',
           'shared_impl/file_type_conversion.cc',
           'shared_impl/file_type_conversion.h',
+          'shared_impl/flash_clipboard_format_registry.cc',
+          'shared_impl/flash_clipboard_format_registry.h',
           'shared_impl/host_resource.cc',
           'shared_impl/host_resource.h',
           'shared_impl/id_assignment.cc',
           'shared_impl/id_assignment.h',
           'shared_impl/platform_file.cc',
           'shared_impl/platform_file.h',
           'shared_impl/ppapi_globals.cc',
           'shared_impl/ppapi_globals.h',
           'shared_impl/ppapi_permissions.cc',
           'shared_impl/ppapi_permissions.h',
@@ skipping 203 matching lines @@
         'defines': [
           'PPAPI_SHARED_IMPLEMENTATION',
           'PPAPI_THUNK_IMPLEMENTATION',
         ],
         'include_dirs': [
           '..',
         ],
         'target_conditions': [
           ['>(nacl_untrusted_build)==1 or >(nacl_win64_target)==1', {
             'sources!': [
+              'shared_impl/flash_clipboard_format_registry.cc',
               'shared_impl/ppb_audio_input_shared.cc',
               'shared_impl/ppb_url_util_shared.cc',
               'shared_impl/ppb_video_decoder_shared.cc',
               'shared_impl/ppb_video_capture_shared.cc',
               'shared_impl/private/ppb_browser_font_trusted_shared.cc',
               'shared_impl/private/ppb_char_set_shared.cc',
               'thunk/ppb_audio_input_thunk.cc',
               'thunk/ppb_audio_input_trusted_thunk.cc',
               'thunk/ppb_audio_trusted_thunk.cc',
               'thunk/ppb_broker_thunk.cc',
@@ skipping 47 matching lines @@
               'thunk/ppb_tcp_socket_private_thunk.cc',
               'thunk/ppb_udp_socket_private_thunk.cc',
               'thunk/ppb_x509_certificate_private_thunk.cc',
             ],
           }],
         ],
       }],
     ],
   },
 }