make base::SharedMemoryHandle a class on POSIX.

content/browser/renderer_host/sandbox_ipc_linux.cc

 // 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.
 
 #include "content/browser/renderer_host/sandbox_ipc_linux.h"
 
 #include <fcntl.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
@@ skipping 323 matching lines @@
   base::SharedMemoryCreateOptions options;
   uint32_t size;
   if (!iter.ReadUInt32(&size))
     return;
   options.size = size;
   if (!iter.ReadBool(&options.executable))
     return;
   int shm_fd = -1;
   base::SharedMemory shm;
   if (shm.Create(options))
-    shm_fd = shm.handle().fd;
+    shm_fd = shm.handle().GetHandle();
   base::Pickle reply;
   SendRendererReply(fds, reply, shm_fd);
 }
 
 void SandboxIPCHandler::HandleMatchWithFallback(
     int fd,
     base::PickleIterator iter,
     const std::vector<base::ScopedFD>& fds) {
   std::string face;
   bool is_bold;
@@ skipping 58 matching lines @@
 }
 
 SandboxIPCHandler::~SandboxIPCHandler() {
   if (IGNORE_EINTR(close(lifeline_fd_)) < 0)
     PLOG(ERROR) << "close";
   if (IGNORE_EINTR(close(browser_socket_)) < 0)
     PLOG(ERROR) << "close";
 }
 
 }  // namespace content