Linux: Add support for chrooted renderers.

chrome/browser/renderer_host/render_sandbox_host_linux.h

Index: chrome/browser/renderer_host/render_sandbox_host_linux.h
diff --git a/chrome/browser/renderer_host/render_sandbox_host_linux.h b/chrome/browser/renderer_host/render_sandbox_host_linux.h
new file mode 100644
index 0000000000000000000000000000000000000000..43fa4475c42c9a5f40986d46811c909a889ee25a
--- /dev/null
+++ b/chrome/browser/renderer_host/render_sandbox_host_linux.h
@@ -0,0 +1,34 @@
+// Copyright (c) 2009 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.
+
+// http://code.google.com/p/chromium/wiki/LinuxSandboxIPC
+
+#ifndef CHROME_BROWSER_RENDERER_HOST_RENDER_SANDBOX_HOST_LINUX_H_
+#define CHROME_BROWSER_RENDERER_HOST_RENDER_SANDBOX_HOST_LINUX_H_
+
+#include "base/singleton.h"
+#include "base/thread.h"
+#include "base/message_loop.h"
+
+// This is a singleton object which handles sandbox requests from the
+// renderers.
+class RenderSandboxHostLinux {
+ public:
+  // Get the file descriptor which renderers should be given in order to signal
+  // crashes to the browser.
+  int GetRendererSocket() const { return renderer_socket_; }
+
+ private:
+  friend struct DefaultSingletonTraits<RenderSandboxHostLinux>;
+  // This object must be constructed on the main thread.
+  RenderSandboxHostLinux();
+  ~RenderSandboxHostLinux();
+
+  int renderer_socket_;
+  int childs_lifeline_fd_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(RenderSandboxHostLinux);
+};
+
+#endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_SANDBOX_HOST_LINUX_H_