[debug] Untangle DebugInfo from break point support

src/objects/shared-function-info.h

Index: src/objects/shared-function-info.h
diff --git a/src/objects/shared-function-info.h b/src/objects/shared-function-info.h
index ecdcf786c8eef236f565241a2c95c4f8786d6d44..8a68d69d43023a2c50304246534ae0f8c3d2e66e 100644
--- a/src/objects/shared-function-info.h
+++ b/src/objects/shared-function-info.h
@@ -172,6 +172,10 @@ class SharedFunctionInfo : public HeapObject {
   inline bool HasDebugInfo() const;
   DebugInfo* GetDebugInfo() const;
 
+  // Break infos are contained in DebugInfo, this is a convenience method
+  // to simplify access.
+  bool HasBreakInfo() const;
+
   // A function has debug code if the compiled code has debug break slots.
   inline bool HasDebugCode() const;