[Fuchsia] Migrate from __fdio_* to fdio_unsafe_* API names.

We use some unsafe FDIO-internal APIs to implement asynchronous waits
on file-descriptors.  These APIs have been renamed, and the next SDK
roll will remove the old names.

Change-Id: I234931903c579c1ae1b46f082d4e526e65b05714
Reviewed-on: https://chromium-review.googlesource.com/c/1285515
Commit-Queue: Wez <wez@chromium.org>
Reviewed-by: Wez <wez@chromium.org>
Reviewed-by: Fabrice de Gans-Riberi <fdegans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600558}

base/message_loop/message_pump_fuchsia.cc

@@ -5,7 +5,7 @@
 #include "base/message_loop/message_pump_fuchsia.h"
 
 #include <lib/fdio/io.h>
-#include <lib/fdio/private.h>
+#include <lib/fdio/unsafe.h>
 #include <zircon/status.h>
 #include <zircon/syscalls.h>
 
@@ -112,7 +112,7 @@ void MessagePumpFuchsia::FdWatchController::OnZxHandleSignalled(
     zx_handle_t handle,
     zx_signals_t signals) {
   uint32_t events;
-  __fdio_wait_end(io_, signals, &events);
+  fdio_unsafe_wait_end(io_, signals, &events);
 
   // Each |watcher_| callback we invoke may stop or delete |this|. The pump has
   // set |was_stopped_| to point to a safe location on the calling stack, so we
@@ -141,7 +141,7 @@ bool MessagePumpFuchsia::FdWatchController::WaitBegin() {
   // Refresh the |handle_| and |desired_signals_| from the mxio for the fd.
   // Some types of fdio map read/write events to different signals depending on
   // their current state, so we must do this every time we begin to wait.
-  __fdio_wait_begin(io_, desired_events_, &object, &trigger);
+  fdio_unsafe_wait_begin(io_, desired_events_, &object, &trigger);
   if (async_wait_t::object == ZX_HANDLE_INVALID) {
     DLOG(ERROR) << "fdio_wait_begin failed";
     return false;
@@ -153,7 +153,7 @@ bool MessagePumpFuchsia::FdWatchController::WaitBegin() {
 bool MessagePumpFuchsia::FdWatchController::StopWatchingFileDescriptor() {
   bool success = StopWatchingZxHandle();
   if (io_) {
-    __fdio_release(io_);
+    fdio_unsafe_release(io_);
     io_ = nullptr;
   }
   return success;
@@ -179,7 +179,7 @@ bool MessagePumpFuchsia::WatchFileDescriptor(int fd,
   controller->watcher_ = delegate;
 
   DCHECK(!controller->io_);
-  controller->io_ = __fdio_fd_to_io(fd);
+  controller->io_ = fdio_unsafe_fd_to_io(fd);
   if (!controller->io_) {
     DLOG(ERROR) << "Failed to get IO for FD";
     return false;

third_party/fuchsia-sdk/BUILD.gn

@@ -40,10 +40,10 @@ fuchsia_sdk_pkg("fdio") {
     "include/lib/fdio/limits.h",
     "include/lib/fdio/module.modulemap",
     "include/lib/fdio/namespace.h",
-    "include/lib/fdio/private.h",
     "include/lib/fdio/remoteio.h",
     "include/lib/fdio/socket.h",
     "include/lib/fdio/spawn.h",
+    "include/lib/fdio/unsafe.h",
     "include/lib/fdio/util.h",
     "include/lib/fdio/vfs.h",
     "include/lib/fdio/watcher.h",