Popular sites on the NTP: add thumbnails!

chrome/browser/android/popular_sites.h

Index: chrome/browser/android/popular_sites.h
diff --git a/chrome/browser/android/popular_sites.h b/chrome/browser/android/popular_sites.h
index e8d904e540a814ab58a74790d19c7f4aa5ffc05f..c5b15a5ce0edf411a8d35031cb745fa8e4631f2c 100644
--- a/chrome/browser/android/popular_sites.h
+++ b/chrome/browser/android/popular_sites.h
@@ -30,11 +30,15 @@ class FileDownloader;
 class PopularSites {
  public:
   struct Site {
-    Site(const base::string16& title, const GURL& url, const GURL& favicon_url);
+    Site(const base::string16& title,
+         const GURL& url,
+         const GURL& favicon_url,
+         const GURL& thumbnail_url);
 
     base::string16 title;
     GURL url;
     GURL favicon_url;
+    GURL thumbnail_url;
   };
 
   using FinishedCallback = base::Callback<void(bool /* success */)>;