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 01f4ff8f62518d0d5ec31952d7f063c36e9fcffb..e84656c075a60f9275a193b361f0a3880e41dd9b 100644
--- a/components/favicon/ios/web_favicon_driver.mm
+++ b/components/favicon/ios/web_favicon_driver.mm
@@ -101,6 +101,11 @@ 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();
@@ -140,7 +145,8 @@ 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