Encode interpreter::SourcePositionTable as variable-length ints.

src/debug/debug.cc

Index: src/debug/debug.cc
diff --git a/src/debug/debug.cc b/src/debug/debug.cc
index 1ea420fefe8e1eda7a9f3bf57fc02c13383d8e1f..7d16ed0619db5fbd5b6bf8d32a6caf92feb791c6 100644
--- a/src/debug/debug.cc
+++ b/src/debug/debug.cc
@@ -170,8 +170,9 @@ BreakLocation BreakLocation::CodeIterator::GetBreakLocation() {
 BreakLocation::BytecodeArrayIterator::BytecodeArrayIterator(
     Handle<DebugInfo> debug_info, BreakLocatorType type)
     : Iterator(debug_info),
-      source_position_iterator_(
-          debug_info->abstract_code()->GetBytecodeArray()),
+      source_position_iterator_(debug_info->abstract_code()
+                                    ->GetBytecodeArray()
+                                    ->source_position_table()),
       break_locator_type_(type),
       start_position_(debug_info->shared()->start_position()) {
   if (!Done()) Next();