Remove mate::TryCatch (#26)

It's not used anywhere. We use v8::TryCatch instead.

native_mate/try_catch.cc

@@ -1,49 +0,0 @@
-// 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.chromium file.
-
-#include "native_mate/try_catch.h"
-
-#include <sstream>
-
-#include "native_mate/converter.h"
-
-namespace mate {
-
-TryCatch::TryCatch() {
-}
-
-TryCatch::~TryCatch() {
-}
-
-bool TryCatch::HasCaught() {
-  return try_catch_.HasCaught();
-}
-
-std::string TryCatch::GetStackTrace() {
-  if (!HasCaught()) {
-    return "";
-  }
-
-  std::stringstream ss;
-  v8::Local<v8::Message> message = try_catch_.Message();
-  ss << V8ToString(message->Get()) << std::endl
-     << V8ToString(message->GetSourceLine()) << std::endl;
-
-  v8::Local<v8::StackTrace> trace = message->GetStackTrace();
-  if (trace.IsEmpty())
-    return ss.str();
-
-  int len = trace->GetFrameCount();
-  for (int i = 0; i < len; ++i) {
-    v8::Local<v8::StackFrame> frame = trace->GetFrame(i);
-    ss << V8ToString(frame->GetScriptName()) << ":"
-       << frame->GetLineNumber() << ":"
-       << frame->GetColumn() << ": "
-       << V8ToString(frame->GetFunctionName())
-       << std::endl;
-  }
-  return ss.str();
-}
-
-}  // namespace mate

native_mate/try_catch.h

@@ -1,32 +0,0 @@
-// 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.chromium file.
-
-#ifndef NATIVE_MATE_TRY_CATCH_H_
-#define NATIVE_MATE_TRY_CATCH_H_
-
-#include <string>
-
-#include "base/macros.h"
-#include "v8/include/v8.h"
-
-namespace mate {
-
-// TryCatch is a convenient wrapper around v8::TryCatch.
-class TryCatch {
- public:
-  TryCatch();
-  ~TryCatch();
-
-  bool HasCaught();
-  std::string GetStackTrace();
-
- private:
-  v8::TryCatch try_catch_;
-
-  DISALLOW_COPY_AND_ASSIGN(TryCatch);
-};
-
-}  // namespace mate
-
-#endif  // NATIVE_MATE_TRY_CATCH_H_

native_mate_files.gypi

@@ -17,8 +17,6 @@
       'native_mate/persistent_dictionary.cc',
       'native_mate/persistent_dictionary.h',
       'native_mate/scoped_persistent.h',
-      'native_mate/try_catch.cc',
-      'native_mate/try_catch.h',
       'native_mate/wrappable.cc',
       'native_mate/wrappable.h',
       'native_mate/wrappable_base.h',