Multiprocess test client: Android child process launcher rework.

mojo/edk/embedder/platform_channel_pair_android.cc

+// Copyright 2016 The Chromium Authors. All rights reserved.

[Ken Rockot(use gerrit already), 2016/12/12 22:23:08]

nit: I think it might be less confusing to just lump this code in the _posix.cc
source when !defined(OS_ANDROID)

[Jay Civelli, 2016/12/13 18:23:25]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "mojo/edk/embedder/platform_channel_pair.h"
+
+#include "base/posix/global_descriptors.h"
+#include "base/strings/string_number_conversions.h"
+
+namespace mojo {
+namespace edk {
+
+std::string
+PlatformChannelPair::PrepareToPassClientHandleToChildProcessAsString(
+    HandlePassingInformation* handle_passing_info) const {
+  int fd = client_handle_.get().handle;
+  base::GlobalDescriptors::Key fd_id =
+      base::GlobalDescriptors::GetInstance()->Register(fd);
+  handle_passing_info->push_back(std::pair<int, int>(fd, fd_id));
+  return base::UintToString(fd_id);
+}
+
+// static
+ScopedPlatformHandle
+PlatformChannelPair::PassClientHandleFromParentProcessFromString(
+    const std::string& value) {
+  base::GlobalDescriptors::Key fd_id = -1;
+  if (value.empty() || !base::StringToUint(value, &fd_id)) {
+    LOG(ERROR) << "Missing or invalid --" << kMojoPlatformChannelHandleSwitch;
+    return ScopedPlatformHandle();
+  }
+  int fd = base::GlobalDescriptors::GetInstance()->Get(fd_id);
+  return ScopedPlatformHandle(PlatformHandle(fd));
+}
+
+}  // namespace edk
+}  // namespace mojo