[debug] Untangle BreakLocation and DebugInfo

src/debug/debug-scopes.cc

Index: src/debug/debug-scopes.cc
diff --git a/src/debug/debug-scopes.cc b/src/debug/debug-scopes.cc
index 0e81498c5d8be7cd2a5d35f36a8a238b4f8eca95..de96034abd8e5dd5b614a7a7470424031454a9bd 100644
--- a/src/debug/debug-scopes.cc
+++ b/src/debug/debug-scopes.cc
@@ -61,10 +61,9 @@ ScopeIterator::ScopeIterator(Isolate* isolate, FrameInspector* frame_inspector,
     // inspect the function scope.
     // This can only happen if we set a break point inside right before the
     // return, which requires a debug info to be available.
-    Handle<DebugInfo> debug_info(shared_info->GetDebugInfo());
 
     // Find the break point where execution has stopped.
-    BreakLocation location = BreakLocation::FromFrame(debug_info, GetFrame());
+    BreakLocation location = BreakLocation::FromFrame(GetFrame());
 
     ignore_nested_scopes = location.IsReturn();
   }