[Reading List iOS] Store distillation date and size.

ios/chrome/browser/reading_list/url_downloader_unittest.mm

Index: ios/chrome/browser/reading_list/url_downloader_unittest.mm
diff --git a/ios/chrome/browser/reading_list/url_downloader_unittest.mm b/ios/chrome/browser/reading_list/url_downloader_unittest.mm
index 8946833563e7ce42afb6edc36df725b28ea8c46f..665b8b266fae8d0d4724e9c88ae8d133a824dd66 100644
--- a/ios/chrome/browser/reading_list/url_downloader_unittest.mm
+++ b/ios/chrome/browser/reading_list/url_downloader_unittest.mm
@@ -31,6 +31,11 @@ class DistillerViewerTest : public dom_distiller::DistillerViewerInterface {
                       const std::string& mime_type)
       : dom_distiller::DistillerViewerInterface(nil) {
     std::vector<ImageInfo> images;
+    ImageInfo image;
+    image.url = GURL("http://image");
+    image.data = "image";
+    images.push_back(image);
+
     if (redirect_url.is_valid()) {
       delegate->DistilledPageRedirectedToURL(url, redirect_url);
     }
@@ -101,6 +106,7 @@ class MockURLDownloader : public URLDownloader {
       return;
     }
     original_url_ = url;
+    saved_size_ = 0;
     distiller_.reset(new DistillerViewerTest(
         url,
         base::Bind(&URLDownloader::DistillerCallback, base::Unretained(this)),
@@ -113,9 +119,12 @@ class MockURLDownloader : public URLDownloader {
                      const GURL& distilled_url,
                      SuccessState success,
                      const base::FilePath& distilled_path,
+                     int64_t size,
                      const std::string& title) {
     downloaded_files_.push_back(url);
-    DCHECK_EQ(distilled_url, redirect_url_);
+    // Saved data is the string "html" and an image with data "image".
+    EXPECT_EQ(size, 9);
+    EXPECT_EQ(distilled_url, redirect_url_);
   }
 
   void OnEndRemove(const GURL& url, bool success) {