IPC: Get rid of FileDescriptor usage from FileDescriptorSet and Message
This is a step toward to killing FileDescriptor.
This change lets FiileDescriptorSet have both Files (for owning fds)
and PlatformFiles (for non-owning fds). Doing this, we no longer
need FileDescriptor which provides |auto_close| flag.
BUG=415294
TEST=ipc_tests, ipc_mojo_unittests
R=agl@chromium.org, jam@hcromium.org, viettrungluu@chromium.org
Review URL: https://codereview.chromium.org/583473002
Cr-Commit-Position: refs/heads/master@{#296498}
CrOS-Libchrome-Original-Commit: 96693856edc35a538f6ea8f0bd6ab55c75e3e823
11 files changed