Move CaptivePortalDetector to src/components/captive_portal

chrome/browser/captive_portal/captive_portal_detector.h

-// 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.
-
-#ifndef CHROME_BROWSER_CAPTIVE_PORTAL_CAPTIVE_PORTAL_DETECTOR_H_
-#define CHROME_BROWSER_CAPTIVE_PORTAL_CAPTIVE_PORTAL_DETECTOR_H_
-
-#include "base/basictypes.h"
-#include "base/callback.h"
-#include "base/compiler_specific.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/threading/non_thread_safe.h"
-#include "base/time/time.h"
-#include "net/url_request/url_fetcher.h"
-#include "net/url_request/url_fetcher_delegate.h"
-#include "net/url_request/url_request_context_getter.h"
-
-class GURL;
-
-namespace captive_portal {
-
-// Possible results of an attempt to detect a captive portal.
-enum Result {
-  // There's a confirmed connection to the Internet.
-  RESULT_INTERNET_CONNECTED,
-  // The URL request received a network or HTTP error, or a non-HTTP response.
-  RESULT_NO_RESPONSE,
-  // The URL request apparently encountered a captive portal.  It received a
-  // a valid HTTP response with a 2xx other than 204, 3xx, or 511 status code.
-  RESULT_BEHIND_CAPTIVE_PORTAL,
-  RESULT_COUNT
-};
-
-class CaptivePortalDetector : public net::URLFetcherDelegate,
-                              public base::NonThreadSafe {
- public:
-  struct Results {
-    Results()
-        : result(RESULT_NO_RESPONSE),
-          response_code(net::URLFetcher::RESPONSE_CODE_INVALID) {
-    }
-
-    Result result;
-    int response_code;
-    base::TimeDelta retry_after_delta;
-    GURL landing_url;
-  };
-
-  typedef base::Callback<void(const Results& results)> DetectionCallback;
-
-  // The test URL.  When connected to the Internet, it should return a
-  // blank page with a 204 status code.  When behind a captive portal,
-  // requests for this URL should get an HTTP redirect or a login
-  // page.  When neither is true, no server should respond to requests
-  // for this URL.
-  static const char kDefaultURL[];
-
-  explicit CaptivePortalDetector(
-      const scoped_refptr<net::URLRequestContextGetter>& request_context);
-  virtual ~CaptivePortalDetector();
-
-  static std::string CaptivePortalResultToString(Result result);
-
-  // Triggers a check for a captive portal. After completion, runs the
-  // |callback|.
-  void DetectCaptivePortal(const GURL& url, const DetectionCallback& callback);
-
-  // Cancels captive portal check.
-  void Cancel();
-
- private:
-  friend class CaptivePortalDetectorTestBase;
-
-  // net::URLFetcherDelegate:
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
-
-  // Takes a net::URLFetcher that has finished trying to retrieve the
-  // test URL, and fills a Results struct based on its result.  If the
-  // response is a 503 with a Retry-After header, |retry_after| field
-  // of |results| is populated accordingly.  Otherwise, it's set to
-  // base::TimeDelta().
-  void GetCaptivePortalResultFromResponse(const net::URLFetcher* url_fetcher,
-                                          Results* results) const;
-
-  // Returns the current time. Used only when determining time until a
-  // Retry-After date.
-  base::Time GetCurrentTime() const;
-
-  // Returns true if a captive portal check is currently running.
-  bool FetchingURL() const;
-
-  // Sets current test time. Used by unit tests.
-  void set_time_for_testing(const base::Time& time) {
-    time_for_testing_ = time;
-  }
-
-  // Advances current test time. Used by unit tests.
-  void advance_time_for_testing(const base::TimeDelta& delta) {
-    time_for_testing_ += delta;
-  }
-
-  // URL request context.
-  scoped_refptr<net::URLRequestContextGetter> request_context_;
-
-  DetectionCallback detection_callback_;
-
-  scoped_ptr<net::URLFetcher> url_fetcher_;
-
-  // Test time used by unit tests.
-  base::Time time_for_testing_;
-
-  DISALLOW_COPY_AND_ASSIGN(CaptivePortalDetector);
-};
-
-}  // namespace captive_portal
-
-#endif  // CHROME_BROWSER_CAPTIVE_PORTAL_CAPTIVE_PORTAL_DETECTOR_H_