Mojo: Add a C++-style SharedBuffer API.

mojo/mojo_public.gyp

 # Copyright 2014 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.
 
 {
   'includes': [
     'mojo_variables.gypi',
   ],
   'target_defaults' : {
     'include_dirs': [
@@ skipping 78 matching lines @@
         'public/c/system/system_export.h',
         'public/c/system/types.h',
         'public/c/system/wait_set.h',
       ],
     },
     {
       # GN version: //mojo/public/cpp/system
       'target_name': 'mojo_cpp_system',
       'type': 'static_library',
       'sources': [
+        'public/cpp/system/buffer.cc',
         'public/cpp/system/buffer.h',
         'public/cpp/system/core.h',
         'public/cpp/system/data_pipe.h',
         'public/cpp/system/functions.h',
         'public/cpp/system/handle.h',
         'public/cpp/system/message.h',
         'public/cpp/system/message_pipe.h',
         'public/cpp/system/platform_handle.cc',
         'public/cpp/system/platform_handle.h',
         'public/cpp/system/watcher.cc',
@@ skipping 424 matching lines @@
              'mojo_interface_bindings_java_sources',
              'mojo_public_java',
              '<(DEPTH)/base/base.gyp:base_java',
            ],
            'includes': [ '../build/java.gypi' ],
         },
       ],
     }],
   ],
 }