Cleanup image_fetcher::ImageFetcher

ios/chrome/browser/suggestions/image_fetcher_impl.mm

Index: ios/chrome/browser/suggestions/image_fetcher_impl.mm
diff --git a/ios/chrome/browser/suggestions/image_fetcher_impl.mm b/ios/chrome/browser/suggestions/image_fetcher_impl.mm
index 78f20e625a6941e44172da092bee6bf672900f1b..01cde4860735bd92bd2c8fcf7f8a9be9a4950887 100644
--- a/ios/chrome/browser/suggestions/image_fetcher_impl.mm
+++ b/ios/chrome/browser/suggestions/image_fetcher_impl.mm
@@ -8,6 +8,7 @@
 
 #include "base/threading/sequenced_worker_pool.h"
 #include "ios/chrome/browser/net/image_fetcher.h"
+#include "net/url_request/url_request_context_getter.h"
 #include "skia/ext/skia_utils_ios.h"
 
 namespace suggestions {
@@ -40,7 +41,7 @@ void ImageFetcherImpl::StartOrQueueNetworkRequest(
   }
   // Copy url reference so it's retained.
   const GURL page_url(url);
-  image_fetcher::Callback fetcher_callback =
+  image_fetcher::ImageFetchedCallback fetcher_callback =
       ^(const GURL& original_url, int response_code, NSData* data) {
       if (data) {
         // Most likely always returns 1x images.