[mojo-edk] Make the Mojo EDK compile under NaCl.

mojo/edk/embedder/platform_channel_pair_posix.cc

Index: mojo/edk/embedder/platform_channel_pair_posix.cc
diff --git a/mojo/edk/embedder/platform_channel_pair_posix.cc b/mojo/edk/embedder/platform_channel_pair_posix.cc
index 9c3883922fdb004d3ba0a6f11628f71835818953..071be90f69b2d6c5a60aedba78c8dc0f3dcd5761 100644
--- a/mojo/edk/embedder/platform_channel_pair_posix.cc
+++ b/mojo/edk/embedder/platform_channel_pair_posix.cc
@@ -7,7 +7,9 @@
 #include <fcntl.h>
 #include <stddef.h>
 #include <stdint.h>
+#if !defined(OS_NACL) || defined(OS_NACL_NONSFI)

[Ken Rockot(use gerrit already), 2016/06/06 02:58:33]

nit: The style guide doesn't make a clear statement about this AFAICT but it
seems uncommon to have conditional includes packed in with the rest, even for
system headers. Can this block move down below with other conditional includes?
Same question for all the other conditional includes in this CL.

[Anand Mistry (off Chromium), 2016/06/06 03:47:02]

Done.

 #include <sys/socket.h>
+#endif
 #include <sys/types.h>
 #include <unistd.h>
 
@@ -21,6 +23,10 @@
 #include "build/build_config.h"
 #include "mojo/edk/embedder/platform_handle.h"
 
+#if defined(OS_NACL)
+#include "native_client/src/public/imc_syscalls.h"
+#endif
+
 #if !defined(SO_PEEK_OFF)
 #define SO_PEEK_OFF 42
 #endif
@@ -47,6 +53,9 @@ PlatformChannelPair::PlatformChannelPair(bool client_is_blocking) {
   int fds[2];
   // TODO(vtl): Maybe fail gracefully if |socketpair()| fails.
 
+#if defined(OS_NACL) && !defined(OS_NACL_NONSFI)
+  PCHECK(imc_socketpair(fds) == 0);
+#else
   PCHECK(socketpair(AF_UNIX, SOCK_STREAM, 0, fds) == 0);
 
   // Set the ends to nonblocking.
@@ -64,6 +73,7 @@ PlatformChannelPair::PlatformChannelPair(bool client_is_blocking) {
   PCHECK(setsockopt(fds[1], SOL_SOCKET, SO_NOSIGPIPE, &no_sigpipe,
                     sizeof(no_sigpipe)) == 0);
 #endif  // defined(OS_MACOSX)
+#endif  // defined(OS_NACL) && !defined(OS_NACL_NONSFI)
 
   server_handle_.reset(PlatformHandle(fds[0]));
   DCHECK(server_handle_.is_valid());