[NTP Snippets] Cache images in a LevelDB

chrome/browser/search/suggestions/image_fetcher_impl.cc

Index: chrome/browser/search/suggestions/image_fetcher_impl.cc
diff --git a/chrome/browser/search/suggestions/image_fetcher_impl.cc b/chrome/browser/search/suggestions/image_fetcher_impl.cc
index f2173a1f4540fb1eb9a7467177e5db5631ced776..9d046f0a05ba7e381075b2a7b91af406c78d8b55 100644
--- a/chrome/browser/search/suggestions/image_fetcher_impl.cc
+++ b/chrome/browser/search/suggestions/image_fetcher_impl.cc
@@ -63,8 +63,13 @@ void ImageFetcherImpl::StartOrQueueNetworkRequest(
 
 void ImageFetcherImpl::OnImageURLFetched(const GURL& image_url,
                                          const std::string& image_data) {
-  // TODO(markusheintz): Add a method OnImageDataFetched on the delegate and
-  // call that here.
+  // Inform the ImageFetcherDelegate.
+  if (delegate_) {
+    auto it = pending_net_requests_.find(image_url);
+    DCHECK(it != pending_net_requests_.end());
+    delegate_->OnImageDataFetched(it->second.id, image_data);
+  }
+
   image_decoder_->DecodeImage(
       image_data,
       base::Bind(&ImageFetcherImpl::OnImageDecoded,