Improve process launch handle sharing API.

content/shell/browser/shell_content_browser_client.cc

 // Copyright 2013 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 "content/shell/browser/shell_content_browser_client.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/base_switches.h"
@@ skipping 355 matching lines @@
   callback.Run(Shell::CreateNewWindow(browser_context,
                                       params.url,
                                       nullptr,
                                       gfx::Size())->web_contents());
 }
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 void ShellContentBrowserClient::GetAdditionalMappedFilesForChildProcess(
     const base::CommandLine& command_line,
     int child_process_id,
-    content::FileDescriptorInfo* mappings) {
+    content::PosixFileDescriptorInfo* mappings) {
 #if defined(OS_ANDROID)
   mappings->ShareWithRegion(
       kShellPakDescriptor,
       base::GlobalDescriptors::GetInstance()->Get(kShellPakDescriptor),
       base::GlobalDescriptors::GetInstance()->GetRegion(kShellPakDescriptor));
 
   breakpad::CrashDumpObserver::GetInstance()->BrowserChildProcessStarted(
       child_process_id, mappings);
 #else
   int crash_signal_fd = GetCrashSignalFD(command_line);
@@ skipping 24 matching lines @@
 ShellBrowserContext* ShellContentBrowserClient::browser_context() {
   return shell_browser_main_parts_->browser_context();
 }
 
 ShellBrowserContext*
     ShellContentBrowserClient::off_the_record_browser_context() {
   return shell_browser_main_parts_->off_the_record_browser_context();
 }
 
 }  // namespace content