Revert 98885 - Third attempt at the following. Unreviewed, this was originally reviewed in http:...

net/base/ssl_false_start_blacklist.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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 "net/base/ssl_false_start_blacklist.h"
 
 namespace net {
 
 // static
-bool SSLFalseStartBlacklist::IsMember(const std::string& host) {
-  const std::string last_two_components(LastTwoComponents(host));
-  if (last_two_components.empty())
+bool SSLFalseStartBlacklist::IsMember(const char* host) {
+  const char* last_two_labels = LastTwoLabels(host);
+  if (!last_two_labels)
     return false;
+  const unsigned bucket = Hash(last_two_labels) & (kBuckets - 1);
+  const uint32 start = kHashTable[bucket];
+  const uint32 end = kHashTable[bucket + 1];
+  const size_t len = strlen(host);
 
-  const size_t bucket = Hash(last_two_components) & (kBuckets - 1);
-  for (size_t i = kHashTable[bucket]; i < kHashTable[bucket + 1]; ) {
+  for (size_t i = start; i < end;) {
     const size_t blacklist_entry_len = static_cast<uint8>(kHashData[i]);
-    if (host.length() >= blacklist_entry_len &&
-        !host.compare(host.length() - blacklist_entry_len, blacklist_entry_len,
-                      &kHashData[i + 1], blacklist_entry_len) &&
-        (host.length() == blacklist_entry_len ||
-         host[host.length() - blacklist_entry_len - 1] == '.')) {
+    if (len >= blacklist_entry_len &&
+        memcmp(&host[len - blacklist_entry_len], &kHashData[i + 1],
+               blacklist_entry_len) == 0 &&
+        (len == blacklist_entry_len ||
+         host[len - blacklist_entry_len - 1] == '.')) {
       return true;
     }
     i += blacklist_entry_len + 1;
   }
 
   return false;
 }
 
 }  // namespace net