Add notifications to allow desktop notification permissions to be synced.

base/values.cc

 // Copyright (c) 2009 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/values.h"
 
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 
@@ skipping 814 matching lines @@
     }
   }
   return -1;
 }
 
 void ListValue::Append(Value* in_value) {
   DCHECK(in_value);
   list_.push_back(in_value);
 }
 
+bool ListValue::AppendIfNotPresent(Value* in_value) {
+  DCHECK(in_value);
+  for (ValueVector::iterator i(list_.begin()); i != list_.end(); ++i) {
+    if ((*i)->Equals(in_value))
+      return false;
+  }
+  list_.push_back(in_value);
+  return true;
+}
+
 bool ListValue::Insert(size_t index, Value* in_value) {
   DCHECK(in_value);
   if (index > list_.size())
     return false;
 
   list_.insert(list_.begin() + index, in_value);
   return true;
 }
 
 Value* ListValue::DeepCopy() const {
@@ skipping 16 matching lines @@
        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;
 }