Hook up custom Win 64 SEH to v8

gin/public/debug.h

 // Copyright 2014 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 GIN_PUBLIC_DEBUG_H_
 #define GIN_PUBLIC_DEBUG_H_
 
+#include "build/build_config.h"
 #include "gin/gin_export.h"
 #include "v8/include/v8.h"
 
 namespace gin {
 
 class GIN_EXPORT Debug {
  public:
   /* Installs a callback that is invoked on entry to every V8-generated
    * function.
    *
    * This only affects IsolateHolder instances created after
    * SetFunctionEntryHook was invoked.
    */
   static void SetFunctionEntryHook(v8::FunctionEntryHook entry_hook);
 
   /* Installs a callback that is invoked each time jit code is added, moved,
    * or removed.
    *
    * This only affects IsolateHolder instances created after
    * SetJitCodeEventHandler was invoked.
    */
   static void SetJitCodeEventHandler(v8::JitCodeEventHandler event_handler);
+
+#if defined(OS_WIN)
+  typedef void (__cdecl *CodeRangeCreatedCallback)(void*, size_t);
+
+  /* Sets a callback that is invoked for every new code range being created.
+   *
+   * On Win64, exception handling in jitted code is broken due to the fact
+   * that JS stack frames are not ABI compliant. It is possible to install
+   * custom handlers for the code range which holds the jitted code to work
+   * around this issue.
+   *
+   * https://code.google.com/p/v8/issues/detail?id=3598
+   */
+  static void SetCodeRangeCreatedCallback(CodeRangeCreatedCallback callback);
+#endif
 };
 
 }  // namespace gin
 
 #endif  // GIN_PUBLIC_DEBUG_H_