Add favicon integration tests for FaviconDriverImpl

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 9e1b7e3dc00e51c30d9be6a3f8228c1d4bd30a8b..534c7b7f6637889552f42154b20f14a9eeef27c4 100644
--- a/components/favicon/ios/web_favicon_driver.mm
+++ b/components/favicon/ios/web_favicon_driver.mm
@@ -55,18 +55,6 @@ gfx::Image WebFaviconDriver::GetFavicon() const {
   return item ? item->GetFavicon().image : gfx::Image();
 }
 
-bool WebFaviconDriver::FaviconIsValid() const {
-  web::NavigationItem* item =
-      web_state()->GetNavigationManager()->GetLastCommittedItem();
-  return item ? item->GetFavicon().valid : false;
-}
-
-GURL WebFaviconDriver::GetActiveURL() {
-  web::NavigationItem* item =
-      web_state()->GetNavigationManager()->GetVisibleItem();
-  return item ? item->GetURL() : GURL();
-}
-
 int WebFaviconDriver::DownloadImage(const GURL& url,
                                     int max_image_size,
                                     ImageDownloadCallback callback) {
@@ -131,7 +119,10 @@ WebFaviconDriver::WebFaviconDriver(web::WebState* web_state,
                                    history::HistoryService* history_service,
                                    bookmarks::BookmarkModel* bookmark_model)
     : web::WebStateObserver(web_state),
-      FaviconDriverImpl(favicon_service, history_service, bookmark_model),
+      FaviconDriverImpl(/*enable_touch_icons=*/true,
+                        favicon_service,
+                        history_service,
+                        bookmark_model),
       image_fetcher_(web_state->GetBrowserState()->GetRequestContext(),
                      web::WebThread::GetBlockingPool()) {}
 
@@ -141,7 +132,12 @@ WebFaviconDriver::~WebFaviconDriver() {
 void WebFaviconDriver::FaviconUrlUpdated(
     const std::vector<web::FaviconURL>& candidates) {
   DCHECK(!candidates.empty());
-  OnUpdateFaviconURL(GetActiveURL(), FaviconURLsFromWebFaviconURLs(candidates));
+
+  web::NavigationItem* item =
+      web_state()->GetNavigationManager()->GetVisibleItem();
+
+  OnUpdateFaviconURL(item ? item->GetURL() : GURL(),
+                     FaviconURLsFromWebFaviconURLs(candidates));
 }
 
 }  // namespace favicon