Move TranslateURLFetcher to the translate component

chrome/browser/translate/translate_url_fetcher.h

-// 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 CHROME_BROWSER_TRANSLATE_TRANSLATE_URL_FETCHER_H_
-#define CHROME_BROWSER_TRANSLATE_TRANSLATE_URL_FETCHER_H_
-
-#include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
-#include "net/url_request/url_fetcher_delegate.h"
-#include "url/gurl.h"
-
-class TranslateURLFetcher : public net::URLFetcherDelegate {
- public:
-  // Callback type for Request().
-  typedef base::Callback<void(int, bool, const std::string&)> Callback;
-
-  // Represents internal state if the fetch is completed successfully.
-  enum State {
-    IDLE,        // No fetch request was issued.
-    REQUESTING,  // A fetch request was issued, but not finished yet.
-    COMPLETED,   // The last fetch request was finished successfully.
-    FAILED,      // The last fetch request was finished with a failure.
-  };
-
-  explicit TranslateURLFetcher(int id);
-  virtual ~TranslateURLFetcher();
-
-  int max_retry_on_5xx() {
-    return max_retry_on_5xx_;
-  }
-  void set_max_retry_on_5xx(int count) {
-    max_retry_on_5xx_ = count;
-  }
-
-  const std::string& extra_request_header() {
-    return extra_request_header_;
-  }
-  void set_extra_request_header(const std::string& header) {
-    extra_request_header_ = header;
-  }
-
-  // Requests to |url|. |callback| will be invoked when the function returns
-  // true, and the request is finished asynchronously.
-  // Returns false if the previous request is not finished, or the request
-  // is omitted due to retry limitation.
-  bool Request(const GURL& url, const Callback& callback);
-
-  // Gets internal state.
-  State state() { return state_; }
-
-  // net::URLFetcherDelegate implementation:
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
-
- private:
-  // URL to send the request.
-  GURL url_;
-
-  // ID which is assigned to the URLFetcher.
-  const int id_;
-
-  // Internal state.
-  enum State state_;
-
-  // URLFetcher instance.
-  scoped_ptr<net::URLFetcher> fetcher_;
-
-  // Callback passed at Request(). It will be invoked when an asynchronous
-  // fetch operation is finished.
-  Callback callback_;
-
-  // Counts how many times did it try to fetch the language list.
-  int retry_count_;
-
-  // Max number how many times to retry on the server error
-  int max_retry_on_5xx_;
-
-  // An extra HTTP request header
-  std::string extra_request_header_;
-
-  DISALLOW_COPY_AND_ASSIGN(TranslateURLFetcher);
-};
-
-#endif  // CHROME_BROWSER_TRANSLATE_TRANSLATE_URL_FETCHER_H_