Update reading list entry on download

ios/chrome/browser/reading_list/url_downloader_unittest.cc

Index: ios/chrome/browser/reading_list/url_downloader_unittest.cc
diff --git a/ios/chrome/browser/reading_list/url_downloader_unittest.cc b/ios/chrome/browser/reading_list/url_downloader_unittest.cc
index 14ee119ac500fb8b0f5f734bb13e49848576cdfd..988e396cd031d771d59f881667f1f483fccd7bca 100644
--- a/ios/chrome/browser/reading_list/url_downloader_unittest.cc
+++ b/ios/chrome/browser/reading_list/url_downloader_unittest.cc
@@ -73,7 +73,7 @@ class MockURLDownloader : public URLDownloader {
  private:
   void DownloadURL(GURL url, bool offlineURLExists) override {
     if (offlineURLExists) {
-      DownloadCompletionHandler(url, false);
+      DownloadCompletionHandler(url, "", false);

[sdefresne, 2016/09/09 09:58:58]

s/""/std::string()/

[lody, 2016/09/09 12:17:54]

Done.

       return;
     }
     distiller_.reset(new DistillerViewerTest(
@@ -81,7 +81,10 @@ class MockURLDownloader : public URLDownloader {
         base::Bind(&URLDownloader::DistillerCallback, base::Unretained(this))));
   }
 
-  void OnEndDownload(const GURL& url, bool success) {
+  void OnEndDownload(const GURL& url,
+                     bool success,
+                     const GURL& distilledURL,
+                     const std::string& title) {
     downloaded_files_.push_back(url);
   }