[Sync] Sync do not sync Typed URL when updating an URL that wasn't typed

components/history/core/browser/typed_url_syncable_service.h

Index: components/history/core/browser/typed_url_syncable_service.h
diff --git a/components/history/core/browser/typed_url_syncable_service.h b/components/history/core/browser/typed_url_syncable_service.h
index 838e83efc6d77e07b97a08a165974e9d6dcc6886..2cbc0c26bdf690fa98bdc3e452ba22dd0636b44e 100644
--- a/components/history/core/browser/typed_url_syncable_service.h
+++ b/components/history/core/browser/typed_url_syncable_service.h
@@ -71,11 +71,12 @@ class TypedUrlSyncableService : public syncer::SyncableService,
   // Returns the percentage of DB accesses that have resulted in an error.
   int GetErrorPercentage() const;
 
-  // Converts the passed URL information to a TypedUrlSpecifics structure for
-  // writing to the sync DB.
-  static void WriteToTypedUrlSpecifics(const URLRow& url,
+  // Return true if this function successfully converts the passed URL
+  // information to a TypedUrlSpecifics structure for writing to the sync DB.
+  static bool WriteToTypedUrlSpecifics(const URLRow& url,
                                        const VisitVector& visits,
-                                       sync_pb::TypedUrlSpecifics* specifics);
+                                       sync_pb::TypedUrlSpecifics* specifics)
+      WARN_UNUSED_RESULT;
 
  private:
   friend class TypedUrlSyncableServiceTest;