Revert of [Suggestions] Move ImageManager to the component

chrome/browser/search/suggestions/image_fetcher_impl.h

-// Copyright 2014 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_SEARCH_SUGGESTIONS_IMAGE_FETCHER_IMPL_H_
-#define CHROME_BROWSER_SEARCH_SUGGESTIONS_IMAGE_FETCHER_IMPL_H_
-
-#include <map>
-#include <utility>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/callback.h"
-#include "chrome/browser/bitmap_fetcher/bitmap_fetcher.h"
-#include "components/suggestions/image_fetcher.h"
-#include "ui/gfx/image/image_skia.h"
-#include "url/gurl.h"
-
-namespace net {
-class URLRequestContextGetter;
-}
-
-namespace suggestions {
-
-// A class used to fetch server images.
-class ImageFetcherImpl : public ImageFetcher,
-                         public chrome::BitmapFetcherDelegate {
- public:
-  explicit ImageFetcherImpl(net::URLRequestContextGetter* url_request_context);
-  virtual ~ImageFetcherImpl();
-
-  virtual void SetImageFetcherDelegate(ImageFetcherDelegate* delegate) OVERRIDE;
-
-  virtual void StartOrQueueNetworkRequest(
-      const GURL& url, const GURL& image_url,
-      base::Callback<void(const GURL&, const SkBitmap*)> callback) OVERRIDE;
-
- private:
-  // Inherited from BitmapFetcherDelegate. Runs on the UI thread.
-  virtual void OnFetchComplete(const GURL image_url,
-                               const SkBitmap* bitmap) OVERRIDE;
-
-  typedef std::vector<base::Callback<void(const GURL&, const SkBitmap*)> >
-      CallbackVector;
-
-  // State related to an image fetch (associated website url, image_url,
-  // fetcher, pending callbacks).
-  struct ImageRequest {
-    ImageRequest();
-    // Struct takes ownership of |f|.
-    explicit ImageRequest(chrome::BitmapFetcher* f);
-    ~ImageRequest();
-
-    void swap(ImageRequest* other) {
-      std::swap(url, other->url);
-      std::swap(image_url, other->image_url);
-      std::swap(callbacks, other->callbacks);
-      std::swap(fetcher, other->fetcher);
-    }
-
-    GURL url;
-    GURL image_url;
-    chrome::BitmapFetcher* fetcher;
-    // Queue for pending callbacks, which may accumulate while the request is in
-    // flight.
-    CallbackVector callbacks;
-  };
-
-  typedef std::map<const GURL, ImageRequest> ImageRequestMap;
-
-  // Map from each image URL to the request information (associated website
-  // url, fetcher, pending callbacks).
-  ImageRequestMap pending_net_requests_;
-
-  ImageFetcherDelegate* delegate_;
-
-  net::URLRequestContextGetter* url_request_context_;
-
-  DISALLOW_COPY_AND_ASSIGN(ImageFetcherImpl);
-};
-
-}  // namespace suggestions
-
-#endif  // CHROME_BROWSER_SEARCH_SUGGESTIONS_IMAGE_FETCHER_IMPL_H_