Move TranslateURLFetcher to the translate component

chrome/browser/translate/translate_url_fetcher.cc

-// 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.
-
-#include "chrome/browser/translate/translate_url_fetcher.h"
-
-#include "chrome/browser/browser_process.h"
-#include "net/base/load_flags.h"
-#include "net/http/http_status_code.h"
-#include "net/url_request/url_fetcher.h"
-#include "net/url_request/url_request_status.h"
-
-namespace {
-
-// Retry parameter for fetching.
-const int kMaxRetry = 16;
-
-}  // namespace
-
-TranslateURLFetcher::TranslateURLFetcher(int id)
-    : id_(id),
-      state_(IDLE),
-      retry_count_(0) {
-}
-
-TranslateURLFetcher::~TranslateURLFetcher() {
-}
-
-bool TranslateURLFetcher::Request(
-    const GURL& url,
-    const TranslateURLFetcher::Callback& callback) {
-  // This function is not supposed to be called before previous operaion is not
-  // finished.
-  if (state_ == REQUESTING) {
-    NOTREACHED();
-    return false;
-  }
-
-  if (retry_count_ >= kMaxRetry)
-    return false;
-  retry_count_++;
-
-  state_ = REQUESTING;
-  url_ = url;
-  callback_ = callback;
-
-  fetcher_.reset(net::URLFetcher::Create(
-      id_,
-      url_,
-      net::URLFetcher::GET,
-      this));
-  fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
-                         net::LOAD_DO_NOT_SAVE_COOKIES);
-  fetcher_->SetRequestContext(g_browser_process->system_request_context());
-  // Set retry parameter for HTTP status code 5xx. This doesn't work against
-  // 106 (net::ERR_INTERNET_DISCONNECTED) and so on.
-  // TranslateLanguageList handles network status, and implements retry.
-  fetcher_->SetMaxRetriesOn5xx(max_retry_on_5xx_);
-  if (!extra_request_header_.empty())
-    fetcher_->SetExtraRequestHeaders(extra_request_header_);
-
-  fetcher_->Start();
-
-  return true;
-}
-
-void TranslateURLFetcher::OnURLFetchComplete(const net::URLFetcher* source) {
-  DCHECK(fetcher_.get() == source);
-
-  std::string data;
-  if (source->GetStatus().status() == net::URLRequestStatus::SUCCESS &&
-      source->GetResponseCode() == net::HTTP_OK) {
-    state_ = COMPLETED;
-    source->GetResponseAsString(&data);
-  } else {
-    state_ = FAILED;
-  }
-
-  // Transfer URLFetcher's ownership before invoking a callback.
-  scoped_ptr<const net::URLFetcher> delete_ptr(fetcher_.release());
-  callback_.Run(id_, state_ == COMPLETED, data);
-}