Give base::SharedMemory::CreateAnonymous an executable flag

content/browser/renderer_host/render_sandbox_host_linux.cc

 // Copyright (c) 2011 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/render_sandbox_host_linux.h"
 
 #include <fcntl.h>
 #include <fontconfig/fontconfig.h>
 #include <stdint.h>
 #include <unistd.h>
@@ skipping 354 matching lines @@
     Pickle reply;
     reply.WriteInt(pid);
     SendRendererReply(fds, reply, -1);
   }
 
   void HandleMakeSharedMemorySegment(int fd, const Pickle& pickle, void* iter,
                                      std::vector<int>& fds) {
     uint32_t shm_size;
     if (!pickle.ReadUInt32(&iter, &shm_size))
       return;
+    bool executable;
+    if (!pickle.ReadBool(&iter, &executable))
+      return;
     int shm_fd = -1;
     base::SharedMemory shm;
-    if (shm.CreateAnonymous(shm_size))
+    if (shm.CreateAnonymous(shm_size, executable))
       shm_fd = shm.handle().fd;
     Pickle reply;
     SendRendererReply(fds, reply, shm_fd);
   }
 
   void HandleMatchWithFallback(int fd, const Pickle& pickle, void* iter,
                                std::vector<int>& fds) {
     // Unlike the other calls, for which we are an indirection in front of
     // WebKit or Skia, this call is always made via this sandbox helper
     // process. Therefore the fontconfig code goes in here directly.
@@ skipping 324 matching lines @@
 }
 
 RenderSandboxHostLinux::~RenderSandboxHostLinux() {
   if (initialized_) {
     if (HANDLE_EINTR(close(renderer_socket_)) < 0)
       PLOG(ERROR) << "close";
     if (HANDLE_EINTR(close(childs_lifeline_fd_)) < 0)
       PLOG(ERROR) << "close";
   }
 }