Additional validation code for PrefixSet.

chrome/browser/safe_browsing/prefix_set.h

Index: chrome/browser/safe_browsing/prefix_set.h
diff --git a/chrome/browser/safe_browsing/prefix_set.h b/chrome/browser/safe_browsing/prefix_set.h
index 229b772ef2dddb4d98f58404b0fe40ec143e06e5..cb2cd9f6debfa64071cc776fed1993682aab6505 100644
--- a/chrome/browser/safe_browsing/prefix_set.h
+++ b/chrome/browser/safe_browsing/prefix_set.h
@@ -59,12 +59,16 @@ namespace safe_browsing {
 
 class PrefixSet {
  public:
-  explicit PrefixSet(const std::vector<SBPrefix>& prefixes);
+  explicit PrefixSet(const std::vector<SBPrefix>& sorted_prefixes);
   ~PrefixSet();
 
   // |true| if |prefix| was in |prefixes| passed to the constructor.
   bool Exists(SBPrefix prefix) const;
 
+  // Regenerate the vector of prefixes passed to the constructor into
+  // |prefixes|.  Prefixes will be added in sorted order.
+  void GetPrefixes(std::vector<SBPrefix>* prefixes);
+
  private:
   // Maximum delta that can be encoded in a 16-bit unsigned.
   static const unsigned kMaxDelta = 256 * 256;