Add baked-in favicons for default popular sites on NTP

components/ntp_tiles/popular_sites_impl.cc

Index: components/ntp_tiles/popular_sites_impl.cc
diff --git a/components/ntp_tiles/popular_sites_impl.cc b/components/ntp_tiles/popular_sites_impl.cc
index 566202b07d88c8cc228312ce4c98dbf0a5776b03..d951bd96ff4e680486f8f414bfed6279569fd8ab 100644
--- a/components/ntp_tiles/popular_sites_impl.cc
+++ b/components/ntp_tiles/popular_sites_impl.cc
@@ -129,10 +129,23 @@ PopularSites::SitesVector ParseSiteList(const base::ListValue& list) {
 
     sites.emplace_back(title, GURL(url), GURL(favicon_url),
                        GURL(large_icon_url), GURL(thumbnail_url));
+    item->GetInteger("default_resource_id", &sites.back().default_resource_id);
   }
   return sites;
 }
 
+#if defined(OS_ANDROID) || defined(OS_IOS)
+void SetDefaultResourceForSite(base::ListValue* sites,
+                               int index,
+                               int resource_id) {
+  base::DictionaryValue* site;
+  if (!sites->GetDictionary(index, &site)) {
+    return;
+  }
+  site->SetInteger("default_resource_id", resource_id);
+}
+#endif
+
 // Creates the list of popular sites based on a snapshot available for mobile.
 std::unique_ptr<base::ListValue> DefaultPopularSites() {
 #if defined(OS_ANDROID) || defined(OS_IOS)
@@ -141,6 +154,15 @@ std::unique_ptr<base::ListValue> DefaultPopularSites() {
           ResourceBundle::GetSharedInstance().GetRawDataResource(
               IDR_DEFAULT_POPULAR_SITES_JSON)));
   DCHECK(sites);
+  int index = 0;
+  for (int resource :
+       {IDR_DEFAULT_POPULAR_SITES_ICON0, IDR_DEFAULT_POPULAR_SITES_ICON1,
+        IDR_DEFAULT_POPULAR_SITES_ICON2, IDR_DEFAULT_POPULAR_SITES_ICON3,
+        IDR_DEFAULT_POPULAR_SITES_ICON4, IDR_DEFAULT_POPULAR_SITES_ICON5,
+        IDR_DEFAULT_POPULAR_SITES_ICON6, IDR_DEFAULT_POPULAR_SITES_ICON7}) {
+    SetDefaultResourceForSite(sites.get(), index++, resource);
+  }
+
   return sites;
 #endif
   return base::MakeUnique<base::ListValue>();
@@ -157,7 +179,8 @@ PopularSites::Site::Site(const base::string16& title,
       url(url),
       favicon_url(favicon_url),
       large_icon_url(large_icon_url),
-      thumbnail_url(thumbnail_url) {}
+      thumbnail_url(thumbnail_url),
+      default_resource_id(-1) {}
 
 PopularSites::Site::Site(const Site& other) = default;