base: Remove the string logging from CHECK().

components/sync/engine_impl/syncer_util.cc

Index: components/sync/engine_impl/syncer_util.cc
diff --git a/components/sync/engine_impl/syncer_util.cc b/components/sync/engine_impl/syncer_util.cc
index 3d80bac15393224b99b70f1931d2d9b8411d9751..19a1897873721e322022ff665a1f2ca947cdb6ab 100644
--- a/components/sync/engine_impl/syncer_util.cc
+++ b/components/sync/engine_impl/syncer_util.cc
@@ -472,7 +472,8 @@ void UpdateLocalDataFromServerData(syncable::WriteTransaction* trans,
 VerifyCommitResult ValidateCommitEntry(syncable::Entry* entry) {
   syncable::Id id = entry->GetId();
   if (id == entry->GetParentId()) {
-    CHECK(id.IsRoot()) << "Non-root item is self parenting." << *entry;
+    // Non-root item is self parenting.
+    CHECK(id.IsRoot());
     // If the root becomes unsynced it can cause us problems.
     LOG(ERROR) << "Root item became unsynced " << *entry;
     return VERIFY_UNSYNCABLE;