Add support to process favicons from Web Manifests

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 500a5f4c435bd145ec08900747301fe90d606aa2..35372253676cdff597abc3bcb24d65ac7b9b731a 100644
--- a/components/favicon/ios/web_favicon_driver.mm
+++ b/components/favicon/ios/web_favicon_driver.mm
@@ -97,6 +97,11 @@ int WebFaviconDriver::DownloadImage(const GURL& url,
   return downloaded_image_count;
 }
 
+void WebFaviconDriver::DownloadManifest(const GURL& url,
+                                        ManifestDownloadCallback callback) {
+  NOTREACHED();
+}
+
 bool WebFaviconDriver::IsOffTheRecord() {
   DCHECK(web_state());
   return web_state()->GetBrowserState()->IsOffTheRecord();
@@ -136,7 +141,8 @@ WebFaviconDriver::~WebFaviconDriver() {
 void WebFaviconDriver::FaviconUrlUpdated(
     const std::vector<web::FaviconURL>& candidates) {
   DCHECK(!candidates.empty());
-  OnUpdateFaviconURL(GetActiveURL(), FaviconURLsFromWebFaviconURLs(candidates));
+  OnUpdateCandidates(GetActiveURL(), FaviconURLsFromWebFaviconURLs(candidates),
+                     base::nullopt);
 }
 
 }  // namespace favicon