Fix crashes due to gfx::Image unsafe thread passing

components/enhanced_bookmarks/image_store.cc

Index: components/enhanced_bookmarks/image_store.cc
diff --git a/components/enhanced_bookmarks/image_store.cc b/components/enhanced_bookmarks/image_store.cc
index a3705781701be60cb7d23356a0615f16100d8155..c0759c13cc5d13e646df4408c6b7876c54e31bca 100644
--- a/components/enhanced_bookmarks/image_store.cc
+++ b/components/enhanced_bookmarks/image_store.cc
@@ -18,7 +18,7 @@ void ImageStore::ChangeImageURL(const GURL& from, const GURL& to) {
   if (!HasKey(from))
     return;
 
-  const enhanced_bookmarks::ImageRecord& record = Get(from);
+  scoped_refptr<enhanced_bookmarks::ImageRecord> record = Get(from);
   Erase(from);
   Insert(to, record);
 }