Reland: [Compiler] Enable handles created during parsing and scope analysis to be deferred.

src/parsing/parse-info.cc

Index: src/parsing/parse-info.cc
diff --git a/src/parsing/parse-info.cc b/src/parsing/parse-info.cc
index 487c36702c9743ddffef33760c1e381b0e3867a3..d3cf86dbdff8050e527230cdb079d538950e847e 100644
--- a/src/parsing/parse-info.cc
+++ b/src/parsing/parse-info.cc
@@ -4,6 +4,7 @@
 
 #include "src/parsing/parse-info.h"
 
+#include "src/api.h"
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/ast.h"
 #include "src/heap/heap-inl.h"
@@ -36,7 +37,8 @@ ParseInfo::ParseInfo(AccountingAllocator* zone_allocator)
       cached_data_(nullptr),
       ast_value_factory_(nullptr),
       function_name_(nullptr),
-      literal_(nullptr) {}
+      literal_(nullptr),
+      deferred_handles_(nullptr) {}
 
 ParseInfo::ParseInfo(Handle<SharedFunctionInfo> shared)
     : ParseInfo(shared->GetIsolate()->allocator()) {
@@ -108,6 +110,17 @@ FunctionKind ParseInfo::function_kind() const {
   return SharedFunctionInfo::FunctionKindBits::decode(compiler_hints_);
 }
 
+void ParseInfo::set_deferred_handles(
+    std::shared_ptr<DeferredHandles> deferred_handles) {
+  DCHECK(deferred_handles_.get() == nullptr);
+  deferred_handles_.swap(deferred_handles);
+}
+
+void ParseInfo::set_deferred_handles(DeferredHandles* deferred_handles) {
+  DCHECK(deferred_handles_.get() == nullptr);
+  deferred_handles_.reset(deferred_handles);
+}
+
 #ifdef DEBUG
 bool ParseInfo::script_is_native() const {
   return script_->type() == Script::TYPE_NATIVE;