Integrating Mac OS Grammar checker into Chromium.

chrome/browser/spellcheck_message_filter.h

+// 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.
+
+#ifndef CHROME_BROWSER_SPELLCHECK_MESSAGE_FILTER_H_
+#define CHROME_BROWSER_SPELLCHECK_MESSAGE_FILTER_H_
+
+#include "chrome/browser/browser_message_filter.h"
+
+// A message filter implementation that receives
+// the platform spell checker requests from SpellCheckProvider.
+class SpellCheckMessageFilter : public BrowserMessageFilter {
+ public:
+  SpellCheckMessageFilter();
+  ~SpellCheckMessageFilter();
+
+  // BrowserMessageFilter implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message,
+                                 bool* message_was_ok);
+
+ private:
+  void OnPlatformRequestTextCheck(int route_id,
+                                  int identifier,
+                                  int document_tag,
+                                  const string16& text);
+};
+
+#endif  // CHROME_BROWSER_SPELLCHECK_MESSAGE_FILTER_H_