override chrome:// URLs via extensions.

base/values.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/values.h"
 
 ///////////////////// Value ////////////////////
 
@@ skipping 592 matching lines @@
 
   if (out_value)
     *out_value = list_[index];
   else
     delete list_[index];
 
   list_.erase(list_.begin() + index);
   return true;
 }
 
-void ListValue::Remove(const Value& value) {
+int ListValue::Remove(const Value& value) {
   for (ValueVector::iterator i(list_.begin()); i != list_.end(); ++i) {
     if ((*i)->Equals(&value)) {
+      size_t index = i - list_.begin();
       list_.erase(i);
-      break;
+      return index;
     }
   }
+  return -1;
 }
 
 void ListValue::Append(Value* in_value) {
   DCHECK(in_value);
   list_.push_back(in_value);
 }
 
+bool ListValue::Insert(size_t index, Value* in_value) {
+  DCHECK(in_value);
+  if (index < 0 || index > list_.size())
+    return false;
+
+  list_.insert(list_.begin() + index, in_value);
+  return true;
+}
+
 Value* ListValue::DeepCopy() const {
   ListValue* result = new ListValue;
 
   for (ValueVector::const_iterator i(list_.begin()); i != list_.end(); ++i)
     result->Append((*i)->DeepCopy());
 
   return result;
 }
 
 bool ListValue::Equals(const Value* other) const {
   if (other->GetType() != GetType())
     return false;
 
   const ListValue* other_list =
       static_cast<const ListValue*>(other);
   const_iterator lhs_it, rhs_it;
   for (lhs_it = begin(), rhs_it = other_list->begin();
        lhs_it != end() && rhs_it != other_list->end();
        ++lhs_it, ++rhs_it) {
     if (!(*lhs_it)->Equals(*rhs_it))
       return false;
   }
   if (lhs_it != end() || rhs_it != other_list->end())
     return false;
 
   return true;
 }