This is the second-to-last remaining use of SRPC.
* Change pnacl_translate_thread.cc to send its request using Chrome
IPC instead of SRPC. Similarly, change
irt_pnacl_translator_link.cc to receive its request this way.
* Add plumbing so that pnacl_translate_thread.cc can acquire a Chrome
IPC channel object. Change LaunchSelLdr() (in ppb_nacl_private.h)
to return this channel, and plumb it through service_runtime.h too.
* Extend nacl_message_scanner.cc to handle a couple of things our new
IPC message needs:
* File handles inside of std::vector<>s.
* File handles inside of sync messages. (Previously, only sync
replies were handled.)
* Change a BUILD.gn to account for #includes of
content/public/common/sandbox_init.h and
ppapi/proxy/{serialized_handle.h,ppapi_messages.h}.
BUG=302078
TEST=e.g. NaClBrowserTestPnacl.PPAPICore (tests PNaCl translation)
Review URL: https://codereview.chromium.org/1512733003
Cr-Commit-Position: refs/heads/master@{#367369}
3bedcdc7ad