PPAPI: Implement PPB_FileMapping on POSIX

ppapi/ppapi_proxy.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.
 
 {
   'target_defaults': {
     'variables': {
       'ppapi_proxy_target': 0,
     },
     'target_conditions': [
@@ skipping 21 matching lines @@
           'proxy/device_enumeration_resource_helper.h',
           'proxy/dispatcher.cc',
           'proxy/dispatcher.h',
           'proxy/enter_proxy.h',
           'proxy/error_conversion.cc',
           'proxy/error_conversion.h',
           'proxy/extensions_common_resource.cc',
           'proxy/extensions_common_resource.h',
           'proxy/file_chooser_resource.cc',
           'proxy/file_chooser_resource.h',
+          'proxy/file_io_resource.cc',
+          'proxy/file_io_resource.h',
+          'proxy/file_mapping_resource.cc',
+          'proxy/file_mapping_resource.h',
           'proxy/file_ref_resource.cc',
           'proxy/file_ref_resource.h',
+          'proxy/file_system_resource.cc',
+          'proxy/file_system_resource.h',
           'proxy/flash_clipboard_resource.cc',
           'proxy/flash_clipboard_resource.h',
           'proxy/flash_drm_resource.cc',
           'proxy/flash_drm_resource.h',
           'proxy/flash_file_resource.cc',
           'proxy/flash_file_resource.h',
           'proxy/flash_font_file_resource.cc',
           'proxy/flash_font_file_resource.h',
           'proxy/flash_fullscreen_resource.cc',
           'proxy/flash_fullscreen_resource.h',
           'proxy/flash_menu_resource.cc',
           'proxy/flash_menu_resource.h',
           'proxy/flash_resource.cc',
           'proxy/flash_resource.h',
-          'proxy/file_io_resource.cc',
-          'proxy/file_io_resource.h',
-          'proxy/file_system_resource.cc',
-          'proxy/file_system_resource.h',
           'proxy/gamepad_resource.cc',
           'proxy/gamepad_resource.h',
           'proxy/graphics_2d_resource.cc',
           'proxy/graphics_2d_resource.h',
           'proxy/host_dispatcher.cc',
           'proxy/host_dispatcher.h',
           'proxy/host_resolver_private_resource.cc',
           'proxy/host_resolver_private_resource.h',
           'proxy/host_resolver_resource.cc',
           'proxy/host_resolver_resource.h',
@@ skipping 183 matching lines @@
               'proxy/serialized_flash_menu.cc',
               'proxy/talk_resource.cc',
               'proxy/video_capture_resource.cc',
             ],
           }],
         ],
       }],
     ],
   },
 }