Revert of Use IOSImageDataFetcherWrapper for favicon

components/favicon/ios/web_favicon_driver.mm

Index: components/favicon/ios/web_favicon_driver.mm
diff --git a/components/favicon/ios/web_favicon_driver.mm b/components/favicon/ios/web_favicon_driver.mm
index 735c3ad4b726c874e495c789c53fad1325280888..03777812d270aaab8087036341b4f3035fc340a0 100644
--- a/components/favicon/ios/web_favicon_driver.mm
+++ b/components/favicon/ios/web_favicon_driver.mm
@@ -12,20 +12,9 @@
 #include "ios/web/public/navigation_item.h"
 #include "ios/web/public/navigation_manager.h"
 #include "ios/web/public/web_state/web_state.h"
-#include "ios/web/public/web_thread.h"
-#include "skia/ext/skia_utils_ios.h"
-#include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/image/image.h"
 
 DEFINE_WEB_STATE_USER_DATA_KEY(favicon::WebFaviconDriver);
-
-// Callback for the download of favicon.
-using ImageDownloadCallback =
-    base::Callback<void(int image_id,
-                        int http_status_code,
-                        const GURL& image_url,
-                        const std::vector<SkBitmap>& bitmaps,
-                        const std::vector<gfx::Size>& sizes)>;
 
 namespace favicon {
 
@@ -66,33 +55,10 @@
     return 0;
   }
 
-  static int downloaded_image_count = 0;
-  int local_download_id = ++downloaded_image_count;
-
-  ImageDownloadCallback local_image_callback = base::Bind(
-      &FaviconDriverImpl::DidDownloadFavicon, base::Unretained(this));
-  GURL local_url(url);
-
-  image_fetcher::IOSImageDataFetcherCallback local_callback =
-      ^(NSData* data, const image_fetcher::RequestMetadata& metadata) {
-        if (metadata.response_code ==
-            image_fetcher::ImageDataFetcher::RESPONSE_CODE_INVALID)
-          return;
-
-        std::vector<SkBitmap> frames;
-        std::vector<gfx::Size> sizes;
-        if (data) {
-          frames = skia::ImageDataToSkBitmaps(data);
-          for (const auto& frame : frames) {
-            sizes.push_back(gfx::Size(frame.width(), frame.height()));
-          }
-        }
-        local_image_callback.Run(local_download_id, metadata.response_code,
-                                 local_url, frames, sizes);
-      };
-  image_fetcher_.FetchImageDataWebpDecoded(url, local_callback);
-
-  return downloaded_image_count;
+  return web_state()->DownloadImage(
+      url, true, max_image_size, false,
+      base::Bind(&FaviconDriverImpl::DidDownloadFavicon,
+                 base::Unretained(this)));
 }
 
 bool WebFaviconDriver::IsOffTheRecord() {
@@ -130,9 +96,8 @@
                                    history::HistoryService* history_service,
                                    bookmarks::BookmarkModel* bookmark_model)
     : web::WebStateObserver(web_state),
-      FaviconDriverImpl(favicon_service, history_service, bookmark_model),
-      image_fetcher_(web_state->GetBrowserState()->GetRequestContext(),
-                     web::WebThread::GetBlockingPool()) {}
+      FaviconDriverImpl(favicon_service, history_service, bookmark_model) {
+}
 
 WebFaviconDriver::~WebFaviconDriver() {
 }