Added 128px icon size for bookmarked apps.

chrome/browser/extensions/bookmark_app_helper.cc

Index: chrome/browser/extensions/bookmark_app_helper.cc
diff --git a/chrome/browser/extensions/bookmark_app_helper.cc b/chrome/browser/extensions/bookmark_app_helper.cc
index 84f5697b0f77af232895cd7b946025d1b8639b96..f7632ec49d506a747663ef6703ebbc9b7911cd4f 100644
--- a/chrome/browser/extensions/bookmark_app_helper.cc
+++ b/chrome/browser/extensions/bookmark_app_helper.cc
@@ -117,6 +117,7 @@ std::set<int> SizesToGenerate() {
   const int kIconSizesToGenerate[] = {
       extension_misc::EXTENSION_ICON_SMALL,
       extension_misc::EXTENSION_ICON_MEDIUM,
+      extension_misc::EXTENSION_ICON_LARGE,
   };
   return std::set<int>(kIconSizesToGenerate,
                        kIconSizesToGenerate + arraysize(kIconSizesToGenerate));