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base/values.h

Index: base/values.h
diff --git a/base/values.h b/base/values.h
index cd68b10944688ce7283f468a540603e09a91e7df..482ffa0e06858935b8fbdc56eaf2a45372777385 100644
--- a/base/values.h
+++ b/base/values.h
@@ -334,12 +334,17 @@ class ListValue : public Value {
   // it will return false and the ListValue object will be unchanged.
   bool Remove(size_t index, Value** out_value);
 
-  // Removes the first instance of |value| found in the list, if any.
-  void Remove(const Value& value);
+  // Removes the first instance of |value| found in the list, if any, returning
+  // the index that it was located at (-1 for not present).
+  int Remove(const Value& value);
 
   // Appends a Value to the end of the list.
   void Append(Value* in_value);
 
+  // Insert a Value at index.
+  // Returns true if successful, or false if the index was out of range.
+  bool Insert(size_t index, Value* in_value);
+
   // Iteration
   typedef ValueVector::iterator iterator;
   typedef ValueVector::const_iterator const_iterator;