make base::SharedMemoryHandle a class on POSIX.

components/exo/wayland/server.cc

 // 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.
 
 #include "components/exo/wayland/server.h"
 
 #include <alpha-compositing-unstable-v1-server-protocol.h>
 #include <gaming-input-unstable-v1-server-protocol.h>
 #include <gaming-input-unstable-v2-server-protocol.h>
 #include <grp.h>
@@ skipping 425 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // wl_shm_interface:
 
 void shm_create_pool(wl_client* client,
                      wl_resource* resource,
                      uint32_t id,
                      int fd,
                      int32_t size) {
   std::unique_ptr<SharedMemory> shared_memory =
       GetUserDataAs<Display>(resource)->CreateSharedMemory(
-          base::FileDescriptor(fd, true), size);
+          base::SharedMemoryHandle::ImportHandle(fd), size);
   if (!shared_memory) {
     wl_resource_post_no_memory(resource);
     return;
   }
 
   wl_resource* shm_pool_resource =
       wl_resource_create(client, &wl_shm_pool_interface, 1, id);
 
   SetImplementation(shm_pool_resource, &shm_pool_implementation,
                     std::move(shared_memory));
@@ skipping 2285 matching lines @@
     std::unique_ptr<char, base::FreeDeleter> keymap_string(
         xkb_keymap_get_as_string(xkb_keymap_.get(), XKB_KEYMAP_FORMAT_TEXT_V1));
     DCHECK(keymap_string.get());
     size_t keymap_size = strlen(keymap_string.get()) + 1;
     base::SharedMemory shared_keymap;
     bool rv = shared_keymap.CreateAndMapAnonymous(keymap_size);
     DCHECK(rv);
     memcpy(shared_keymap.memory(), keymap_string.get(), keymap_size);
     wl_keyboard_send_keymap(keyboard_resource_,
                             WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1,
-                            shared_keymap.handle().fd, keymap_size);
+                            shared_keymap.handle().GetHandle(), keymap_size);
   }
 
   // Overridden from KeyboardDelegate:
   void OnKeyboardDestroying(Keyboard* keyboard) override { delete this; }
   bool CanAcceptKeyboardEventsForSurface(Surface* surface) const override {
     wl_resource* surface_resource = GetSurfaceResource(surface);
     // We can accept events for this surface if the client is the same as the
     // keyboard.
     return surface_resource &&
            wl_resource_get_client(surface_resource) == client();
@@ skipping 1193 matching lines @@
   DCHECK(event_loop);
   wl_event_loop_dispatch(event_loop, timeout.InMilliseconds());
 }
 
 void Server::Flush() {
   wl_display_flush_clients(wl_display_.get());
 }
 
 }  // namespace wayland
 }  // namespace exo