Remove unused code in google_apis/gaia

google_apis/gaia/oauth2_revocation_fetcher.cc

-// Copyright (c) 2012 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 "google_apis/gaia/oauth2_revocation_fetcher.h"
-
-#include <algorithm>
-#include <string>
-#include <vector>
-
-#include "base/json/json_reader.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
-#include "base/values.h"
-#include "google_apis/gaia/gaia_urls.h"
-#include "google_apis/gaia/google_service_auth_error.h"
-#include "net/base/escape.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_context_getter.h"
-#include "net/url_request/url_request_status.h"
-
-using net::ResponseCookies;
-using net::URLFetcher;
-using net::URLFetcherDelegate;
-using net::URLRequestContextGetter;
-using net::URLRequestStatus;
-
-namespace {
-static const char kOAuth2RevokeTokenURL[] =
-    "https://www.googleapis.com/oauth2/v2/RevokeToken";
-
-static const char kAuthorizationHeaderFormat[] =
-    "Authorization: Bearer %s";
-
-static const char kRevocationBodyFormat[] =
-    "client_id=%s&origin=%s";
-
-static GoogleServiceAuthError CreateAuthError(URLRequestStatus status) {
-  CHECK(!status.is_success());
-  if (status.status() == URLRequestStatus::CANCELED) {
-    return GoogleServiceAuthError(GoogleServiceAuthError::REQUEST_CANCELED);
-  } else {
-    DLOG(WARNING) << "Could not reach Google Accounts servers: errno "
-                  << status.error();
-    return GoogleServiceAuthError::FromConnectionError(status.error());
-  }
-}
-
-static URLFetcher* CreateFetcher(URLRequestContextGetter* getter,
-                                 const GURL& url,
-                                 const std::string& header,
-                                 const std::string& body,
-                                 URLFetcherDelegate* delegate) {
-  bool empty_body = body.empty();
-  URLFetcher* result = net::URLFetcher::Create(
-      0, url,
-      empty_body ? URLFetcher::GET : URLFetcher::POST,
-      delegate);
-
-  result->SetRequestContext(getter);
-  result->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
-                       net::LOAD_DO_NOT_SAVE_COOKIES);
-  // Fetchers are sometimes cancelled because a network change was detected,
-  // especially at startup and after sign-in on ChromeOS. Retrying once should
-  // be enough in those cases; let the fetcher retry up to 3 times just in case.
-  // http://crbug.com/163710
-  result->SetAutomaticallyRetryOnNetworkChanges(3);
-  if (!header.empty())
-    result->SetExtraRequestHeaders(header);
-
-  if (!empty_body)
-    result->SetUploadData("application/x-www-form-urlencoded", body);
-
-  return result;
-}
-}  // namespace
-
-OAuth2RevocationFetcher::OAuth2RevocationFetcher(
-    OAuth2RevocationConsumer* consumer,
-    URLRequestContextGetter* getter)
-    : consumer_(consumer),
-      getter_(getter),
-      state_(INITIAL) { }
-
-OAuth2RevocationFetcher::~OAuth2RevocationFetcher() { }
-
-void OAuth2RevocationFetcher::CancelRequest() {
-  fetcher_.reset();
-}
-
-void OAuth2RevocationFetcher::Start(const std::string& access_token,
-                                    const std::string& client_id,
-                                    const std::string& origin) {
-  access_token_ = access_token;
-  client_id_ = client_id;
-  origin_ = origin;
-  StartRevocation();
-}
-
-void OAuth2RevocationFetcher::StartRevocation() {
-  CHECK_EQ(INITIAL, state_);
-  state_ = REVOCATION_STARTED;
-  fetcher_.reset(CreateFetcher(
-      getter_,
-      MakeRevocationUrl(),
-      MakeRevocationHeader(access_token_),
-      MakeRevocationBody(client_id_, origin_),
-      this));
-  fetcher_->Start();  // OnURLFetchComplete will be called.
-}
-
-void OAuth2RevocationFetcher::EndRevocation(const net::URLFetcher* source) {
-  CHECK_EQ(REVOCATION_STARTED, state_);
-  state_ = REVOCATION_DONE;
-
-  URLRequestStatus status = source->GetStatus();
-  if (!status.is_success()) {
-    OnRevocationFailure(CreateAuthError(status));
-    return;
-  }
-
-  if (source->GetResponseCode() != net::HTTP_NO_CONTENT) {
-    OnRevocationFailure(GoogleServiceAuthError(
-        GoogleServiceAuthError::INVALID_GAIA_CREDENTIALS));
-    return;
-  }
-
-  OnRevocationSuccess();
-}
-
-void OAuth2RevocationFetcher::OnRevocationSuccess() {
-  consumer_->OnRevocationSuccess();
-}
-
-void OAuth2RevocationFetcher::OnRevocationFailure(
-    const GoogleServiceAuthError& error) {
-  state_ = ERROR_STATE;
-  consumer_->OnRevocationFailure(error);
-}
-
-void OAuth2RevocationFetcher::OnURLFetchComplete(
-    const net::URLFetcher* source) {
-  CHECK(source);
-  EndRevocation(source);
-}
-
-// static
-GURL OAuth2RevocationFetcher::MakeRevocationUrl() {
-  return GURL(kOAuth2RevokeTokenURL);
-}
-
-// static
-std::string OAuth2RevocationFetcher::MakeRevocationHeader(
-    const std::string& access_token) {
-  return base::StringPrintf(kAuthorizationHeaderFormat, access_token.c_str());
-}
-
-// static
-std::string OAuth2RevocationFetcher::MakeRevocationBody(
-    const std::string& client_id,
-    const std::string& origin) {
-  std::string enc_client_id = net::EscapeUrlEncodedData(client_id, true);
-  std::string enc_origin = net::EscapeUrlEncodedData(origin, true);
-  return base::StringPrintf(
-      kRevocationBodyFormat,
-      enc_client_id.c_str(),
-      enc_origin.c_str());
-}