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diff --git a/chrome/renderer/translate/text_translator_impl.h b/chrome/renderer/translate/text_translator_impl.h
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+++ b/chrome/renderer/translate/text_translator_impl.h
@@ -0,0 +1,51 @@
+// Copyright (c) 2010 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_RENDERER_TRANSLATE_TEXT_TRANSLATOR_IMPL_H_
+#define CHROME_RENDERER_TRANSLATE_TEXT_TRANSLATOR_IMPL_H_
+
+#include <string>
+#include <vector>
+
+#include "base/logging.h"
+#include "chrome/renderer/translate/text_translator.h"
+
+class RenderView;
+
+// An implementation of the TextTranslator that sends translation requests
+// to the browser.
+// There is one instance of TextTranslatorImpl per RenderViewHost and the
+// RenderViewHost owns that instance.
+//
+// TODO(jcampan): limit the number of translation requests in flight so not to
+//                swamp the browser's resource dispatcher host.
+
+class TextTranslatorImpl : public TextTranslator {
+ public:
+  explicit TextTranslatorImpl(RenderView* render_view);
+
+  // Called by the renderer to notify a translation response has been received.
+  // |error_id| is different than 0 if an error occurred.
+  void OnTranslationResponse(int work_id,
+                             int error_id,
+                             const std::vector<string16>& text_chunks);
+
+  // TextTranslator implementation.
+  virtual int Translate(const std::vector<string16>& text,
+                        std::string from_lang,
+                        std::string to_lang,
+                        bool secure,
+                        TextTranslator::Delegate* delegate);
+ private:
+  // The render view through which translation requests/responses are
+  // sent/received.
+  RenderView* render_view_;
+
+  // The counter used to create work ids.
+  int work_id_counter_;
+
+  DISALLOW_COPY_AND_ASSIGN(TextTranslatorImpl);
+};
+
+#endif  // CHROME_RENDERER_TRANSLATE_TEXT_TRANSLATOR_IMPL_H_