Reland of 'Optimize trivial regexp disjunctions' CL 1176453002

src/list.h

Index: src/list.h
diff --git a/src/list.h b/src/list.h
index 021cafe1460383f266b055735ac3136925c4385e..00cbd40312025ad8ba2fcc40a1f17b2a8409cd22 100644
--- a/src/list.h
+++ b/src/list.h
@@ -149,8 +149,13 @@ class List {
   void Iterate(Visitor* visitor);
 
   // Sort all list entries (using QuickSort)
+  void Sort(int (*cmp)(const T* x, const T* y), size_t start, size_t length);
   void Sort(int (*cmp)(const T* x, const T* y));
   void Sort();
+  void StableSort(int (*cmp)(const T* x, const T* y), size_t start,
+                  size_t length);
+  void StableSort(int (*cmp)(const T* x, const T* y));
+  void StableSort();
 
   INLINE(void Initialize(int capacity,
                          AllocationPolicy allocator = AllocationPolicy()));