[parser] Give preparser and parser independent loggers

src/parsing/preparser.cc

Index: src/parsing/preparser.cc
diff --git a/src/parsing/preparser.cc b/src/parsing/preparser.cc
index 1ddda66b4e2037409af95aeeda141896b8e01a6c..62db4ef69892d7d6691223f586f0a870b792e83e 100644
--- a/src/parsing/preparser.cc
+++ b/src/parsing/preparser.cc
@@ -85,11 +85,9 @@ PreParserIdentifier PreParser::GetSymbol() const {
 
 PreParser::PreParseResult PreParser::PreParseFunction(
     FunctionKind kind, DeclarationScope* function_scope, bool parsing_module,
-    SingletonLogger* log, bool is_inner_function, bool may_abort,
-    int* use_counts) {
+    bool is_inner_function, bool may_abort, int* use_counts) {
   DCHECK_EQ(FUNCTION_SCOPE, function_scope->scope_type());
   parsing_module_ = parsing_module;
-  log_ = log;
   use_counts_ = use_counts;
   DCHECK(!track_unresolved_variables_);
   track_unresolved_variables_ = is_inner_function;
@@ -136,7 +134,7 @@ PreParser::PreParseResult PreParser::PreParseFunction(
   } else if (stack_overflow()) {
     return kPreParseStackOverflow;
   } else if (!*ok) {
-    DCHECK(log->has_error());
+    DCHECK(log_.has_error());
   } else {
     DCHECK_EQ(Token::RBRACE, scanner()->peek());
 
@@ -247,11 +245,11 @@ PreParser::LazyParsingResult PreParser::ParseStatementListAndLogFunction(
   int body_end = scanner()->peek_location().end_pos;
   DeclarationScope* scope = this->scope()->AsDeclarationScope();
   DCHECK(scope->is_function_scope());
-  log_->LogFunction(start_position, body_end, formals->num_parameters(),
-                    formals->function_length, has_duplicate_parameters,
-                    function_state_->materialized_literal_count(),
-                    function_state_->expected_property_count(), language_mode(),
-                    scope->uses_super_property(), scope->calls_eval());
+  log_.LogFunction(start_position, body_end, formals->num_parameters(),
+                   formals->function_length, has_duplicate_parameters,
+                   function_state_->materialized_literal_count(),
+                   function_state_->expected_property_count(), language_mode(),
+                   scope->uses_super_property(), scope->calls_eval());
   return kLazyParsingComplete;
 }