Make LiteralBuffer + LiteralScope private.

src/parsing/parser.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/parsing/parser.h"
 
 #include "src/api.h"
 #include "src/ast/ast.h"
 #include "src/ast/ast-expression-rewriter.h"
 #include "src/ast/ast-expression-visitor.h"
@@ skipping 5332 matching lines @@
     DCHECK(stat->is_target_for_anonymous());
     if (anonymous || ContainsLabel(stat->labels(), label)) {
       return stat;
     }
   }
   return NULL;
 }
 
 
 void Parser::HandleSourceURLComments(Isolate* isolate, Handle<Script> script) {
-  if (scanner_.source_url()->length() > 0) {
-    Handle<String> source_url = scanner_.source_url()->Internalize(isolate);
+  Handle<String> source_url = scanner_.SourceUrl(isolate);
+  if (!source_url.is_null()) {
     script->set_source_url(*source_url);
   }
-  if (scanner_.source_mapping_url()->length() > 0) {
-    Handle<String> source_mapping_url =
-        scanner_.source_mapping_url()->Internalize(isolate);
+  Handle<String> source_mapping_url = scanner_.SourceMappingUrl(isolate);
+  if (!source_mapping_url.is_null()) {
     script->set_source_mapping_url(*source_mapping_url);
   }
 }
 
 
 void Parser::Internalize(Isolate* isolate, Handle<Script> script, bool error) {
   // Internalize strings.
   ast_value_factory()->Internalize(isolate);
 
   // Error processing.
@@ skipping 1705 matching lines @@
   node->Print(Isolate::Current());
 }
 #endif  // DEBUG
 
 #undef CHECK_OK
 #undef CHECK_OK_VOID
 #undef CHECK_FAILED
 
 }  // namespace internal
 }  // namespace v8