Read ChromeOS version numbers from file before sandboxing and cache them.

chrome/app/chrome_main.cc

 // Copyright (c) 2011 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 "chrome/app/chrome_main.h"
 
 #include "app/app_paths.h"
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
@@ skipping 54 matching lines @@
 #include "third_party/WebKit/Source/WebKit/mac/WebCoreSupport/WebSystemInterface.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 #endif
 
 #if defined(OS_POSIX)
 #include <locale.h>
 #include <signal.h>
 #endif
 
 #if defined(OS_CHROMEOS)
+#include "base/sys_info.h"
 #include "chrome/browser/chromeos/boot_times_loader.h"
 #endif
 
 #if defined(USE_X11)
 #include <gdk/gdk.h>
 #include <glib.h>
 #include <gtk/gtk.h>
 #include <stdlib.h>
 #include <string.h>
 #include "ui/base/x/x11_util.h"
@@ skipping 647 matching lines @@
 #if defined(OS_MACOSX)
     // Update the process name (need resources to get the strings, so
     // only do this when ResourcesBundle has been initialized).
     SetMacProcessName(process_type);
 #endif  // defined(OS_MACOSX)
   }
 
   if (!process_type.empty())
     CommonSubprocessInit(process_type);
 
+#if defined(OS_CHROMEOS)
+  {
+    // Read and cache ChromeOS version from file,
+    // to be used from inside the sandbox.
+    int32 major_version, minor_version, bugfix_version;
+    base::SysInfo::OperatingSystemVersionNumbers(
+        &major_version, &minor_version, &bugfix_version);
+  }
+#endif
+
   // Initialize the sandbox for this process.
   SandboxInitWrapper sandbox_wrapper;
   bool initialize_sandbox = true;
 
 #if defined(OS_WIN)
   sandbox_wrapper.SetServices(sandbox_info);
 #elif defined(OS_MACOSX)
   // On OS X the renderer sandbox needs to be initialized later in the startup
   // sequence in RendererMainPlatformDelegate::EnableSandbox().
   // Same goes for NaClLoader, in NaClMainPlatformDelegate::EnableSandbox(),
@@ skipping 36 matching lines @@
 
   if (SubprocessNeedsResourceBundle(process_type))
     ResourceBundle::CleanupSharedInstance();
 
   logging::CleanupChromeLogging();
 
   chrome_main::LowLevelShutdown();
 
   return exit_code;
 }