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diff --git a/base/win/wrapped_window_proc.h b/base/win/wrapped_window_proc.h
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+// 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.
+
+// Provides a way to handle exceptions that happen while a WindowProc is
+// running. The behavior of exceptions generated inside a WindowProc is OS
+// dependent, but it is possible that the OS just ignores the exception and
+// continues execution, which leads to unpredictable behavior for Chrome.
+
+#ifndef BASE_WIN_WRAPPED_WINDOW_PROC_H_
+#define BASE_WIN_WRAPPED_WINDOW_PROC_H_
+#pragma once
+
+#include <windows.h>
+
+namespace base {
+namespace win {
+
+// An exception filter for a WindowProc. The return value determines how the
+// exception should be handled, following standard SEH rules. However, the
+// expected behavior for this function is to not return, instead of returning
+// EXCEPTION_EXECUTE_HANDLER or similar, given that in general we are not
+// prepared to handle exceptions.
+typedef int (__cdecl *WinProcExceptionFilter)(EXCEPTION_POINTERS* info);
+
+// Sets the filter to deal with exceptions inside a WindowProc. Returns the old
+// exception filter, if any.
+// This function should be called before any window is created.
+WinProcExceptionFilter SetWinProcExceptionFilter(WinProcExceptionFilter filter);
+
+// Calls the registered exception filter.
+int CallExceptionFilter(EXCEPTION_POINTERS* info);
+
+// Wrapper that supplies a standard exception frame for the provided WindowProc.
+// The normal usage is something like this:
+//
+// LRESULT CALLBACK MyWinProc(HWND hwnd, UINT message,
+//                            WPARAM wparam, LPARAM lparam) {
+//   // Do Something.
+// }
+//
+// ...
+//
+//   WNDCLASSEX wc = {0};
+//   wc.lpfnWndProc = WrappedWindowProc<MyWinProc>;
+//   wc.lpszClassName = class_name;
+//   ...
+//   RegisterClassEx(&wc);
+//
+//   CreateWindowW(class_name, window_name, ...
+//
+template <WNDPROC proc>
+LRESULT CALLBACK WrappedWindowProc(HWND hwnd, UINT message,
+                                   WPARAM wparam, LPARAM lparam) {
+  LRESULT rv = 0;
+  __try {
+    rv = proc(hwnd, message, wparam, lparam);
+  } __except(CallExceptionFilter(GetExceptionInformation())) {
+  }
+  return rv;
+}
+
+}  // namespace win
+}  // namespace base
+
+#endif  // BASE_WIN_WRAPPED_WINDOW_PROC_H_