[DOMStorage] Rate limiting writes to disk.

content/common/dom_storage/dom_storage_map.cc

 // Copyright 2013 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 "content/common/dom_storage/dom_storage_map.h"
 
 #include "base/logging.h"
 
 namespace content {
 
 namespace {
 
 size_t size_of_item(const base::string16& key, const base::string16& value) {
   return (key.length() + value.length()) * sizeof(base::char16);
 }
 
-size_t CountBytes(const DOMStorageValuesMap& values) {
-  if (values.size() == 0)
-    return 0;
-
-  size_t count = 0;
-  DOMStorageValuesMap::const_iterator it = values.begin();
-  for (; it != values.end(); ++it)
-    count += size_of_item(it->first, it->second.string());
-  return count;
-}
-
 }  // namespace
 
 DOMStorageMap::DOMStorageMap(size_t quota)
     : bytes_used_(0),
       quota_(quota) {
   ResetKeyIterator();
 }
 
 DOMStorageMap::~DOMStorageMap() {}
 
@@ skipping 74 matching lines @@
   copy->bytes_used_ = bytes_used_;
   copy->ResetKeyIterator();
   return copy;
 }
 
 void DOMStorageMap::ResetKeyIterator() {
   key_iterator_ = values_.begin();
   last_key_index_ = 0;
 }
 
+size_t DOMStorageMap::CountBytes(const DOMStorageValuesMap& values) {
+  if (values.size() == 0)
+    return 0;
+
+  size_t count = 0;
+  for (const auto& pair : values)
+    count += size_of_item(pair.first, pair.second.string());
+  return count;
+}
+
 }  // namespace content