Repurpose NotificationBitmapFetcher to BitmapFetcher

chrome/browser/notifications/sync_notifier/notification_bitmap_fetcher.h

-// 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.
-
-#ifndef CHROME_BROWSER_NOTIFICATIONS_SYNC_NOTIFIER_NOTIFICATION_BITMAP_FETCHER_H_
-#define CHROME_BROWSER_NOTIFICATIONS_SYNC_NOTIFIER_NOTIFICATION_BITMAP_FETCHER_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "chrome/browser/image_decoder.h"
-#include "net/url_request/url_fetcher_delegate.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "url/gurl.h"
-
-namespace net {
-class URLFetcher;
-}  // namespace net
-
-class Profile;
-
-namespace notifier {
-
-// A delegate interface for users of NotificationBitmapFetcher.
-class NotificationBitmapFetcherDelegate {
- public:
-  // This will be called when the bitmap has been requested, whether or not the
-  // request succeeds.  |url| is the URL that was originally fetched so we can
-  // match up the bitmap with a specific request.
-  virtual void OnFetchComplete(const GURL url, const SkBitmap* bitmap) = 0;
-
- protected:
-  virtual ~NotificationBitmapFetcherDelegate() {}
-};
-
-class NotificationBitmapFetcher
-    : public net::URLFetcherDelegate,
-      public ImageDecoder::Delegate {
- public:
-  NotificationBitmapFetcher(
-      const GURL& url,
-      NotificationBitmapFetcherDelegate* delegate);
-  virtual ~NotificationBitmapFetcher();
-
-  GURL url() const { return url_; }
-
-  // Start fetching the URL with the fetcher.  The operation will be continued
-  // in the OnURLFetchComplete callback.
-  void Start(Profile* profile);
-
-  // Methods inherited from URLFetcherDelegate
-
-  // This will be called when the URL has been fetched, successfully or not.
-  // Use accessor methods on |source| to get the results.
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
-
-  // This will be called when some part of the response is read. |current|
-  // denotes the number of bytes received up to the call, and |total| is the
-  // expected total size of the response (or -1 if not determined).
-  virtual void OnURLFetchDownloadProgress(const net::URLFetcher* source,
-                                          int64 current, int64 total) OVERRIDE;
-
-  // Methods inherited from ImageDecoder::Delegate
-
-  // Called when image is decoded. |decoder| is used to identify the image in
-  // case of decoding several images simultaneously.  This will not be called
-  // on the UI thread.
-  virtual void OnImageDecoded(const ImageDecoder* decoder,
-                              const SkBitmap& decoded_image) OVERRIDE;
-
-  // Called when decoding image failed.
-  virtual void OnDecodeImageFailed(const ImageDecoder* decoder) OVERRIDE;
-
- private:
-  scoped_ptr<net::URLFetcher> url_fetcher_;
-  scoped_refptr<ImageDecoder> image_decoder_;
-  const GURL url_;
-  scoped_ptr<SkBitmap> bitmap_;
-  NotificationBitmapFetcherDelegate* const delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(NotificationBitmapFetcher);
-};
-
-}  // namespace notifier
-
-#endif  // CHROME_BROWSER_NOTIFICATIONS_SYNC_NOTIFIER_NOTIFICATION_BITMAP_FETCHER_H_