Move setup of code event handlers to gin

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 "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);
+};
+
+}  // namespace gin
+
+#endif  // GIN_PUBLIC_DEBUG_H_