[clang] [BoundsSafety][APINotes] Upstream API notes format for bounds-safety function parameters (PR #185257)

[Gábor Horváth via cfe-commits]

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@@ -338,6 +338,71 @@ inline bool operator!=(const ContextInfo &LHS, const ContextInfo &RHS) {
   return !(LHS == RHS);
 }
 
+/// API notes for bounds safety annotations
+class BoundsSafetyInfo {
+public:
+  enum class BoundsSafetyKind {
+    CountedBy,
+    CountedByOrNull,
+    SizedBy,
+    SizedByOrNull,
+    EndedBy,
+  };
+
+private:
+  /// Whether this property has been audited for nullability.
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Xazax-hun wrote:

Do we want this information here or is the reference to 'nullability' in the comment a copy paste error?

https://github.com/llvm/llvm-project/pull/185257