Change ImageStore to use SequenceChecker instead of ThreadChecker.

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 3b58b0a81711c79944d4be7e1e96a2c2303e9283..a7e32e20718c35afd06ab4267771abb502e280a5 100644
--- a/components/enhanced_bookmarks/image_store.cc
+++ b/components/enhanced_bookmarks/image_store.cc
@@ -13,7 +13,7 @@ ImageStore::~ImageStore() {
 }
 
 void ImageStore::ChangeImageURL(const GURL& from, const GURL& to) {
-  DCHECK(thread_checker_.CalledOnValidThread());
+  DCHECK(sequence_checker_.CalledOnValidSequencedThread());
 
   if (!HasKey(from))
     return;