Make unittests work in component build

src/source-position-table.h

 // Copyright 2016 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.
 
 #ifndef V8_SOURCE_POSITION_TABLE_H_
 #define V8_SOURCE_POSITION_TABLE_H_
 
 #include "src/assert-scope.h"
 #include "src/checks.h"
 #include "src/globals.h"
@@ skipping 13 matching lines @@
   PositionTableEntry()
       : code_offset(0), source_position(0), is_statement(false) {}
   PositionTableEntry(int offset, int source, bool statement)
       : code_offset(offset), source_position(source), is_statement(statement) {}
 
   int code_offset;
   int source_position;
   bool is_statement;
 };
 
-class SourcePositionTableBuilder {
+class V8_EXPORT_PRIVATE SourcePositionTableBuilder {
  public:
   enum RecordingMode { OMIT_SOURCE_POSITIONS, RECORD_SOURCE_POSITIONS };
 
   SourcePositionTableBuilder(Zone* zone,
                              RecordingMode mode = RECORD_SOURCE_POSITIONS);
 
   void AddPosition(size_t code_offset, int source_position, bool is_statement);
 
   Handle<ByteArray> ToSourcePositionTable(Isolate* isolate,
                                           Handle<AbstractCode> code);
@@ skipping 37 matching lines @@
   ByteArray* table_;
   int index_;
   PositionTableEntry current_;
   DisallowHeapAllocation no_gc;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_SOURCE_POSITION_TABLE_H_