Use SortedListBSearch instead of custom one in heap profiler

src/list.h

Index: src/list.h
===================================================================
--- src/list.h	(revision 11245)
+++ src/list.h	(working copy)
@@ -173,10 +173,12 @@
 
 // Perform binary search for an element in an already sorted
 // list. Returns the index of the element of -1 if it was not found.
+// |cmp| is a predicate that takes a pointer to an element of the List
+// and returns +1 if it is greater, -1 if it is less than the element
+// being searched. 
+template <typename T, class P>
+int SortedListBSearch(const List<T>& list, P cmp);
 template <typename T>
-int SortedListBSearch(
-    const List<T>& list, T elem, int (*cmp)(const T* x, const T* y));
-template <typename T>
 int SortedListBSearch(const List<T>& list, T elem);