Implement out-of-process proxy for PPB_Buffer_Dev.

ppapi/ppapi_cpp.gypi

 # Copyright (c) 2010 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': 'ppapi_c',
       'type': 'none',
       'all_dependent_settings': {
@@ skipping 84 matching lines @@
         'c/private/ppb_proxy_private.h',
         'c/private/ppp_instance_private.h',
 
         # Deprecated interfaces.
         'c/dev/deprecated_bool.h',
         'c/dev/ppb_var_deprecated.h',
         'c/dev/ppp_class_deprecated.h',
 
         # Trusted interfaces.
         'c/trusted/ppb_audio_trusted.h',
+        'c/trusted/ppb_broker_trusted.h',
+        'c/trusted/ppb_buffer_trusted.h',
         'c/trusted/ppb_image_data_trusted.h',
-        'c/trusted/ppb_broker_trusted.h',
         'c/trusted/ppb_url_loader_trusted.h',
         'c/trusted/ppp_broker.h',
       ],
       'conditions': [
         ['p2p_apis==1', {
           'sources': [
             'c/dev/ppb_transport_dev.h',
           ],
         }],
       ],
@@ skipping 150 matching lines @@
         }],
         ['OS=="mac"', {
           'xcode_settings': {
             'WARNING_CFLAGS': ['-Wextra', '-pedantic'],
            },
         }]
       ],
     },
   ],
 }