[Isolates] Merge crankshaft (r5922 from bleeding_edge).

src/list.h

Index: src/list.h
diff --git a/src/list.h b/src/list.h
index 24f34945b54d2fb7f90de95bac1ecf701ecc6d5d..9a2e69897b1f65d0005fca89c0ca349531af6ce3 100644
--- a/src/list.h
+++ b/src/list.h
@@ -91,6 +91,9 @@ class List {
   // Add all the elements from the argument list to this list.
   void AddAll(const List<T, P>& other);
 
+  // Inserts the element at the specific index.
+  void InsertAt(int index, const T& element);
+
   // Added 'count' elements with the value 'value' and returns a
   // vector that allows access to the elements.  The vector is valid
   // until the next change is made to this list.
@@ -102,6 +105,10 @@ class List {
   // size of the list.
   T Remove(int i);
 
+  // Remove the given element from the list. Returns whether or not
+  // the input is included in the list in the first place.
+  bool RemoveElement(const T& elm);
+
   // Removes the last element without deleting it even if T is a
   // pointer type. Returns the removed element.
   INLINE(T RemoveLast()) { return Remove(length_ - 1); }
@@ -113,7 +120,11 @@ class List {
   // Drops all but the first 'pos' elements from the list.
   INLINE(void Rewind(int pos));
 
-  bool Contains(const T& elm);
+  // Drop the last 'count' elements from the list.
+  INLINE(void RewindBy(int count)) { Rewind(length_ - count); }
+
+  bool Contains(const T& elm) const;
+  int CountOccurrences(const T& elm, int start, int end) const;
 
   // Iterate through all list entries, starting at index 0.
   void Iterate(void (*callback)(T* x));