Cull autofill entries older than 60 days.

chrome/browser/webdata/autofill_entry.cc

Index: chrome/browser/webdata/autofill_entry.cc
diff --git a/chrome/browser/webdata/autofill_entry.cc b/chrome/browser/webdata/autofill_entry.cc
index fe874a58cd8c4da8be15155a99f5e15ed43ace29..0235334fe7ebc32796ac6bff7faa1b776bc8685a 100644
--- a/chrome/browser/webdata/autofill_entry.cc
+++ b/chrome/browser/webdata/autofill_entry.cc
@@ -1,12 +1,12 @@
 // Copyright (c) 2011 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 "chrome/browser/webdata/autofill_entry.h"
 
 #include <algorithm>
 #include <set>
 
 #include "base/logging.h"
-#include "chrome/browser/webdata/autofill_entry.h"
 #include "base/utf_string_conversions.h"
 
 AutofillKey::AutofillKey() {}
@@ -72,6 +72,31 @@ bool AutofillEntry::operator<(const AutofillEntry& entry) const {
   return key_ < entry.key();
 }
 
+bool AutofillEntry::HasTimestampsOlder(base::Time time) const {
+  for (size_t i = 0; i < timestamps_.size(); ++i) {
+    if (timestamps_[i] < time)
+      return true;
+  }
+  return false;
+}
+
+bool AutofillEntry::CullExpiredTimeStamps(base::Time expire_before) {
+  std::vector<base::Time> new_timestamps;
+  new_timestamps.reserve(timestamps_.size());
+
+  for (size_t i = 0; i < timestamps_.size(); ++i) {
+    if (timestamps_[i] >= expire_before)
+      new_timestamps.push_back(timestamps_[i]);
+  }
+
+  if (timestamps_.size() == new_timestamps.size())
+    return false;
+
+  timestamps_.swap(new_timestamps);
+  timestamps_culled_ = true;
+  return true;
+}
+
 // Culls the list of timestamps to the most recent |kMaxAutofillTimeStamps|.
 // If sync is enabled, at every browser restart, sync will do a match up of all
 // autofill items on the server with all items on the web db. When webdb loads