Implement MojoGetBufferInformation(), part 3.

mojo/public/platform/native/system_impl_private.h

 // Copyright 2015 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.
 
 // Note: This header should be compilable as C.
 
 #ifndef MOJO_PUBLIC_PLATFORM_NATIVE_SYSTEM_IMPL_PRIVATE_H_
 #define MOJO_PUBLIC_PLATFORM_NATIVE_SYSTEM_IMPL_PRIVATE_H_
 
 #include "mojo/public/c/system/types.h"
@@ skipping 101 matching lines @@
 MojoResult MojoSystemImplCreateSharedBuffer(
     MojoSystemImpl system,
     const struct MojoCreateSharedBufferOptions* options,
     uint64_t num_bytes,
     MojoHandle* shared_buffer_handle);
 MojoResult MojoSystemImplDuplicateBufferHandle(
     MojoSystemImpl system,
     MojoHandle buffer_handle,
     const struct MojoDuplicateBufferHandleOptions* options,
     MojoHandle* new_buffer_handle);
+MojoResult MojoSystemImplGetBufferInformation(
+    MojoSystemImpl system,
+    MojoHandle buffer_handle,
+    struct MojoBufferInformation* info,
+    uint32_t info_num_bytes);
 MojoResult MojoSystemImplMapBuffer(MojoSystemImpl system,
                                    MojoHandle buffer_handle,
                                    uint64_t offset,
                                    uint64_t num_bytes,
                                    void** buffer,
                                    MojoMapBufferFlags flags);
 MojoResult MojoSystemImplUnmapBuffer(MojoSystemImpl system, void* buffer);
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif  // __cplusplus
 
 #endif  // MOJO_PUBLIC_PLATFORM_NATIVE_SYSTEM_IMPL_PRIVATE_H_