Improve process launch handle sharing API.

headless/lib/browser/headless_content_browser_client.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "headless/lib/browser/headless_content_browser_client.h"
 
 #include <memory>
 #include <unordered_set>
 
 #include "base/base_switches.h"
@@ skipping 172 matching lines @@
     content::StoragePartition* partition,
     storage::OptionalQuotaSettingsCallback callback) {
   storage::GetNominalDynamicSettings(
       partition->GetPath(), context->IsOffTheRecord(), std::move(callback));
 }
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 void HeadlessContentBrowserClient::GetAdditionalMappedFilesForChildProcess(
     const base::CommandLine& command_line,
     int child_process_id,
-    content::FileDescriptorInfo* mappings) {
+    content::PosixFileDescriptorInfo* mappings) {
 #if defined(HEADLESS_USE_BREAKPAD)
   int crash_signal_fd = GetCrashSignalFD(command_line, *browser_->options());
   if (crash_signal_fd >= 0)
     mappings->Share(kCrashDumpSignal, crash_signal_fd);
 #endif  // defined(HEADLESS_USE_BREAKPAD)
 }
 #endif  // defined(OS_POSIX) && !defined(OS_MACOSX)
 
 void HeadlessContentBrowserClient::AppendExtraCommandLineSwitches(
     base::CommandLine* command_line,
@@ skipping 29 matching lines @@
 }
 
 void HeadlessContentBrowserClient::ResourceDispatcherHostCreated() {
   resource_dispatcher_host_delegate_.reset(
       new HeadlessResourceDispatcherHostDelegate);
   content::ResourceDispatcherHost::Get()->SetDelegate(
       resource_dispatcher_host_delegate_.get());
 }
 
 }  // namespace headless