[iwyu] Include handles.h less.

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"
-#include "src/handles.h"
 #include "src/source-position.h"
 #include "src/zone/zone-containers.h"
 
 namespace v8 {
 namespace internal {
 
 class AbstractCode;
 class BytecodeArray;
 class ByteArray;
+template <typename T>
+class Handle;
 class Isolate;
 class Zone;
 
 struct PositionTableEntry {
   PositionTableEntry()
       : code_offset(0), source_position(0), is_statement(false) {}
   PositionTableEntry(int offset, int64_t source, bool statement)
       : code_offset(offset), source_position(source), is_statement(statement) {}
 
   int code_offset;
@@ skipping 53 matching lines @@
   ByteArray* table_;
   int index_;
   PositionTableEntry current_;
   DisallowHeapAllocation no_gc;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_SOURCE_POSITION_TABLE_H_