Don't wrap roots in Handle just to dereference immediately.

src/ast/scopeinfo.cc

Index: src/ast/scopeinfo.cc
diff --git a/src/ast/scopeinfo.cc b/src/ast/scopeinfo.cc
index 5d0212c750b5916c1d95de1da83f9692a9f47643..70547aab5d0d2b209ef2c578d2ee32f65aba3993 100644
--- a/src/ast/scopeinfo.cc
+++ b/src/ast/scopeinfo.cc
@@ -373,7 +373,7 @@ Handle<ScopeInfo> ScopeInfo::CreateGlobalThisBinding(Isolate* isolate) {
 
   // Here we add info for context-allocated "this".
   DCHECK_EQ(index, scope_info->ContextLocalNamesIndex());
-  scope_info->set(index++, *isolate->factory()->this_string());
+  scope_info->set(index++, isolate->heap()->this_string());
   DCHECK_EQ(index, scope_info->ContextLocalInfosIndex());
   const uint32_t value = VariableModeField::encode(CONST) |
                          InitFlagField::encode(kCreatedInitialized) |