Implement MojoGetBufferInformation(), part 2.

mojo/edk/system/core.h

 // Copyright 2013 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.
 
 #ifndef MOJO_EDK_SYSTEM_CORE_H_
 #define MOJO_EDK_SYSTEM_CORE_H_
 
 #include <stdint.h>
 
 #include <functional>
@@ skipping 134 matching lines @@
   // These methods correspond to the API functions defined in
   // "mojo/public/c/system/buffer.h":
   MojoResult CreateSharedBuffer(
       UserPointer<const MojoCreateSharedBufferOptions> options,
       uint64_t num_bytes,
       UserPointer<MojoHandle> shared_buffer_handle);
   MojoResult DuplicateBufferHandle(
       MojoHandle buffer_handle,
       UserPointer<const MojoDuplicateBufferHandleOptions> options,
       UserPointer<MojoHandle> new_buffer_handle);
+  MojoResult GetBufferInformation(MojoHandle buffer_handle,
+                                  UserPointer<MojoBufferInformation> info,
+                                  uint32_t info_num_bytes);
   MojoResult MapBuffer(MojoHandle buffer_handle,
                        uint64_t offset,
                        uint64_t num_bytes,
                        UserPointer<void*> buffer,
                        MojoMapBufferFlags flags);
   MojoResult UnmapBuffer(UserPointer<void> buffer);
 
  private:
   friend bool internal::ShutdownCheckNoLeaks(Core*);
 
@@ skipping 18 matching lines @@
   util::Mutex mapping_table_mutex_;
   MappingTable mapping_table_ MOJO_GUARDED_BY(mapping_table_mutex_);
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(Core);
 };
 
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_CORE_H_