Move alternate_nav_infobar_delegate.* from c/b/infobars/ to c/b/ui/omnibox.

chrome/browser/alternate_nav_url_fetcher.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_ALTERNATE_NAV_URL_FETCHER_H_
-#define CHROME_BROWSER_ALTERNATE_NAV_URL_FETCHER_H_
-
-#include <string>
-
-#include "base/memory/scoped_ptr.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-#include "googleurl/src/gurl.h"
-#include "net/url_request/url_fetcher_delegate.h"
-
-namespace content {
-class NavigationController;
-}
-
-namespace net {
-class URLFetcher;
-class URLRequestStatus;
-}
-
-// Attempts to get the HEAD of a host name and displays an info bar if the
-// request was successful. This is used for single-word queries where we can't
-// tell if the entry was a search or an intranet hostname. The autocomplete bar
-// assumes it's a query and issues an AlternateNavURLFetcher to display a "did
-// you mean" infobar suggesting a navigation.
-//
-// The memory management of this object is a bit tricky. The location bar view
-// will create us and be responsible for us until we attach as an observer
-// after a pending load starts (it will delete us if this doesn't happen).
-// Once this pending load starts, we're responsible for deleting ourselves.
-// We'll do this in the following cases:
-//   * The tab is navigated again once we start listening (so the fetch is no
-//     longer useful)
-//   * The tab is closed before we show an infobar
-//   * The intranet fetch fails
-//   * None of the above apply, so we successfully show an infobar
-class AlternateNavURLFetcher : public content::NotificationObserver,
-                               public net::URLFetcherDelegate {
- public:
-  enum State {
-    NOT_STARTED,
-    IN_PROGRESS,
-    SUCCEEDED,
-    FAILED,
-  };
-
-  explicit AlternateNavURLFetcher(const GURL& alternate_nav_url);
-  virtual ~AlternateNavURLFetcher();
-
-  State state() const { return state_; }
-
- private:
-  // content::NotificationObserver
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
-
-  // net::URLFetcherDelegate
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
-
-  // Sets |controller_| to the supplied pointer and begins fetching
-  // |alternate_nav_url_|.
-  void StartFetch(content::NavigationController* controller);
-
-  // Sets |state_| to either SUCCEEDED or FAILED depending on the result of the
-  // fetch.
-  void SetStatusFromURLFetch(const GURL& url,
-                             const net::URLRequestStatus& status,
-                             int response_code);
-
-  // Displays the infobar if all conditions are met (the page has loaded and
-  // the fetch of the alternate URL succeeded).  Unless we're still waiting on
-  // one of the above conditions to finish, this will also delete us, as whether
-  // or not we show an infobar, there is no reason to live further.
-  void ShowInfobarIfPossible();
-
-  GURL alternate_nav_url_;
-  scoped_ptr<net::URLFetcher> fetcher_;
-  content::NavigationController* controller_;
-  State state_;
-  bool navigated_to_entry_;
-
-  content::NotificationRegistrar registrar_;
-
-  DISALLOW_COPY_AND_ASSIGN(AlternateNavURLFetcher);
-};
-
-#endif  // CHROME_BROWSER_ALTERNATE_NAV_URL_FETCHER_H_