Introduce gin_shell

gin/try_catch.h

Index: gin/try_catch.h
diff --git a/gin/try_catch.h b/gin/try_catch.h
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+++ b/gin/try_catch.h
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+// Copyright 2013 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_EXCEPTION_H_
+#define GIN_EXCEPTION_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "v8/include/v8.h"
+
+namespace gin {
+
+class TryCatch {
+ public:
+  TryCatch();
+  ~TryCatch();
+
+  bool HasCaught();
+  std::string GetPrettyMessage();
+
+ private:
+  v8::TryCatch try_catch_;
+
+  DISALLOW_COPY_AND_ASSIGN(TryCatch);
+};
+
+}  // namespace gin
+
+#endif  // GIN_EXCEPTION_H_