Turn //mojo/public/cpp/bindings and //mojo/public/cpp/system into components

mojo/public/cpp/system/platform_handle.h

 // Copyright 2016 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.
 
 // This file provides a C++ wrapping around the Mojo C API for platform handles,
 // replacing the prefix of "Mojo" with a "mojo" namespace.
 //
 // Please see "mojo/public/c/system/platform_handle.h" for complete
 // documentation of the API.
 
 #ifndef MOJO_PUBLIC_CPP_SYSTEM_PLATFORM_HANDLE_H_
 #define MOJO_PUBLIC_CPP_SYSTEM_PLATFORM_HANDLE_H_
 
 #include <stdint.h>
 
 #include "base/compiler_specific.h"
 #include "base/files/file.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/shared_memory_handle.h"
 #include "base/process/process_handle.h"
 #include "mojo/public/c/system/platform_handle.h"
 #include "mojo/public/cpp/system/buffer.h"
 #include "mojo/public/cpp/system/handle.h"
+#include "mojo/public/cpp/system/system_export.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 namespace mojo {
 
 #if defined(OS_POSIX)
 const MojoPlatformHandleType kPlatformFileHandleType =
     MOJO_PLATFORM_HANDLE_TYPE_FILE_DESCRIPTOR;
 
 #if defined(OS_MACOSX) && !defined(OS_IOS)
 const MojoPlatformHandleType kPlatformSharedBufferHandleType =
     MOJO_PLATFORM_HANDLE_TYPE_MACH_PORT;
 #else
 const MojoPlatformHandleType kPlatformSharedBufferHandleType =
     MOJO_PLATFORM_HANDLE_TYPE_FILE_DESCRIPTOR;
 #endif  // defined(OS_MACOSX) && !defined(OS_IOS)
 
 #elif defined(OS_WIN)
 const MojoPlatformHandleType kPlatformFileHandleType =
     MOJO_PLATFORM_HANDLE_TYPE_WINDOWS_HANDLE;
 
 const MojoPlatformHandleType kPlatformSharedBufferHandleType =
     MOJO_PLATFORM_HANDLE_TYPE_WINDOWS_HANDLE;
 #endif  // defined(OS_POSIX)
 
 // Wraps a PlatformFile as a Mojo handle. Takes ownership of the file object.
+MOJO_CPP_SYSTEM_EXPORT
 ScopedHandle WrapPlatformFile(base::PlatformFile platform_file);
 
 // Unwraps a PlatformFile from a Mojo handle.
+MOJO_CPP_SYSTEM_EXPORT
 MojoResult UnwrapPlatformFile(ScopedHandle handle, base::PlatformFile* file);
 
 // Wraps a base::SharedMemoryHandle as a Mojo handle. Takes ownership of the
 // SharedMemoryHandle. Note that |read_only| is only an indicator of whether
 // |memory_handle| only supports read-only mapping. It does NOT have any
 // influence on the access control of the shared buffer object.
 ScopedSharedBufferHandle WrapSharedMemoryHandle(
     const base::SharedMemoryHandle& memory_handle,
     size_t size,
     bool read_only);
 
 // Unwraps a base::SharedMemoryHandle from a Mojo handle. The caller assumes
 // responsibility for the lifetime of the SharedMemoryHandle.
-MojoResult UnwrapSharedMemoryHandle(ScopedSharedBufferHandle handle,
-                                    base::SharedMemoryHandle* memory_handle,
-                                    size_t* size,
-                                    bool* read_only);
+MOJO_CPP_SYSTEM_EXPORT MojoResult
+UnwrapSharedMemoryHandle(ScopedSharedBufferHandle handle,
+                         base::SharedMemoryHandle* memory_handle,
+                         size_t* size,
+                         bool* read_only);
 
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_SYSTEM_PLATFORM_HANDLE_H_