Improve process launch handle sharing API.

chrome/browser/chrome_content_browser_client.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 #define CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 248 matching lines @@
       content::BrowserContext* browser_context,
       const GURL& url) override;
   void OverridePageVisibilityState(
       content::RenderFrameHost* render_frame_host,
       blink::WebPageVisibilityState* visibility_state) override;
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
   void GetAdditionalMappedFilesForChildProcess(
       const base::CommandLine& command_line,
       int child_process_id,
-      content::FileDescriptorInfo* mappings) override;
+      content::PosixFileDescriptorInfo* mappings) override;
 #endif  // defined(OS_POSIX) && !defined(OS_MACOSX)
 #if defined(OS_WIN)
   bool PreSpawnRenderer(sandbox::TargetPolicy* policy) override;
   base::string16 GetAppContainerSidForSandboxType(
       int sandbox_type) const override;
 #endif
   void ExposeInterfacesToRenderer(
       service_manager::BinderRegistry* registry,
       content::AssociatedInterfaceRegistry* associated_registry,
       content::RenderProcessHost* render_process_host) override;
@@ skipping 116 matching lines @@
   std::unique_ptr<
       service_manager::BinderRegistryWithParams<content::RenderFrameHost*>>
       frame_interfaces_parameterized_;
 
   base::WeakPtrFactory<ChromeContentBrowserClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClient);
 };
 
 #endif  // CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_