Pass both 32 and 64 bit snapshot and natives fds to child processes.

content/app/content_main_runner.cc

 // 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.
 
 #include "content/public/app/content_main_runner.h"
 
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 #include <string>
@@ skipping 121 matching lines @@
 
 #if !defined(OS_IOS) && !defined(CHROME_MULTIPLE_DLL_BROWSER)
 base::LazyInstance<ContentPluginClient>
     g_empty_content_plugin_client = LAZY_INSTANCE_INITIALIZER;
 base::LazyInstance<ContentRendererClient>
     g_empty_content_renderer_client = LAZY_INSTANCE_INITIALIZER;
 base::LazyInstance<ContentUtilityClient>
     g_empty_content_utility_client = LAZY_INSTANCE_INITIALIZER;
 #endif  // !OS_IOS && !CHROME_MULTIPLE_DLL_BROWSER
 
+#if defined(V8_USE_EXTERNAL_STARTUP_DATA)
+#if defined __LP64__
+#define kV8NativesDataDescriptor kV8NativesDataDescriptor64
+#define kV8SnapshotDataDescriptor kV8SnapshotDataDescriptor64
+#else
+#define kV8NativesDataDescriptor kV8NativesDataDescriptor32
+#define kV8SnapshotDataDescriptor kV8SnapshotDataDescriptor32
+#endif
+#endif
+
 #if defined(OS_POSIX) && !defined(OS_IOS)
 
 // Setup signal-handling state: resanitize most signals, ignore SIGPIPE.
 void SetupSignalHandlers() {
   // Sanitise our signal handling state. Signals that were ignored by our
   // parent will also be ignored by us. We also inherit our parent's sigmask.
   sigset_t empty_signal_set;
   CHECK_EQ(0, sigemptyset(&empty_signal_set));
   CHECK_EQ(0, sigprocmask(SIG_SETMASK, &empty_signal_set, NULL));
 
@@ skipping 643 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ContentMainRunnerImpl);
 };
 
 // static
 ContentMainRunner* ContentMainRunner::Create() {
   return new ContentMainRunnerImpl();
 }
 
 }  // namespace content