Make ProfileImageDownloader available to non-chromeos code

chrome/browser/chromeos/login/profile_image_downloader.h

-// Copyright (c) 2011 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_CHROMEOS_LOGIN_PROFILE_IMAGE_DOWNLOADER_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_PROFILE_IMAGE_DOWNLOADER_H_
-#pragma once
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "chrome/browser/chromeos/login/image_decoder.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-#include "content/public/common/url_fetcher_delegate.h"
-#include "googleurl/src/gurl.h"
-
-namespace chromeos {
-
-// Downloads user profile image, decodes it in a sandboxed process.
-class ProfileImageDownloader : public content::URLFetcherDelegate,
-                               public ImageDecoder::Delegate,
-                               public content::NotificationObserver {
- public:
-  // Enum for reporting histograms about profile picture download.
-  enum DownloadResult {
-    kDownloadSuccessChanged,
-    kDownloadSuccess,
-    kDownloadFailure,
-    kDownloadDefault,
-
-    // Must be the last, convenient count.
-    kDownloadResultsCount
-  };
-
-  // Reports on success or failure of Profile image download. It is OK to
-  // delete the |ProfileImageDownloader| instance in any of these handlers.
-  class Delegate {
-   public:
-    virtual ~Delegate() {}
-
-    // Called when image is successfully downloaded and decoded.
-    virtual void OnDownloadSuccess(const SkBitmap& image) = 0;
-
-    // Called on download failure.
-    virtual void OnDownloadFailure() {}
-
-    // Called when user has the default profile image and we won't download
-    // it.
-    virtual void OnDownloadDefaultImage() {}
-  };
-
-  explicit ProfileImageDownloader(Delegate* delegate);
-  virtual ~ProfileImageDownloader();
-
-  // Starts downloading the picture if the necessary authorization token is
-  // ready. If not, subscribes to token service and starts fetching if the
-  // token is available. Should not be called more than once.
-  void Start();
-
- private:
-  // Overriden from content::URLFetcherDelegate:
-  virtual void OnURLFetchComplete(const content::URLFetcher* source) OVERRIDE;
-
-  // Overriden from ImageDecoder::Delegate:
-  virtual void OnImageDecoded(const ImageDecoder* decoder,
-                              const SkBitmap& decoded_image) OVERRIDE;
-  virtual void OnDecodeImageFailed(const ImageDecoder* decoder) OVERRIDE;
-
-  // Overriden from content::NotificationObserver:
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
-
-  // Searches for profile image URL in user entry response from Picasa.
-  // Returns an empty string on failure.
-  std::string GetProfileImageURL(const std::string& data) const;
-
-  // Returns true if the image url is url of the default profile picture.
-  bool IsDefaultProfileImageURL(const std::string& url) const;
-
-  // Issues the first request to get user profile image.
-  void StartFetchingImage();
-
-  Delegate* delegate_;
-  std::string auth_token_;
-  scoped_ptr<content::URLFetcher> user_entry_fetcher_;
-  scoped_ptr<content::URLFetcher> profile_image_fetcher_;
-  content::NotificationRegistrar registrar_;
-
-  DISALLOW_COPY_AND_ASSIGN(ProfileImageDownloader);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_PROFILE_IMAGE_DOWNLOADER_H_