Transfer v8 snapshot files as file descriptors to child processes on Posix

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 <set>
 #include <string>
 #include <utility>
@@ skipping 318 matching lines @@
 #endif
 
   // The prerender tracker used to determine whether a render process is used
   // for prerendering and an override cookie store must be provided.
   // This needs to be kept as a member rather than just looked up from
   // the profile due to initialization ordering, as well as due to threading.
   // It is initialized on the UI thread when the ResoureDispatcherHost is
   // created. It is used only the IO thread.
   prerender::PrerenderTracker* prerender_tracker_;
 
+#if defined(OS_POSIX) && !defined(OS_MACOSX)
+  base::ScopedFD v8_natives_fd_;
+  base::ScopedFD v8_snapshot_fd_;
+#endif  // OS_POSIX && !OS_MACOSX
+
   // Vector of additional ChromeContentBrowserClientParts.
   // Parts are deleted in the reverse order they are added.
   std::vector<ChromeContentBrowserClientParts*> extra_parts_;
 
   base::WeakPtrFactory<ChromeContentBrowserClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClient);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_