Make third-party cookie blocking take precedence over any rules that match all hosts.

chrome/common/content_settings_pattern.cc

 // Copyright (c) 2012 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/common/content_settings_pattern.h"
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/string_split.h"
@@ skipping 460 matching lines @@
   }
 
   if (!parts_.is_port_wildcard &&
       parts_.port != port ) {
     return false;
   }
 
   return true;
 }
 
+bool ContentSettingsPattern::MatchesAllHosts() const {
+  return parts_.has_domain_wildcard && parts_.host.empty();
+}
+
 const std::string ContentSettingsPattern::ToString() const {
   if (IsValid())
     return content_settings::PatternParser::ToString(parts_);
   else
     return "";
 }
 
 ContentSettingsPattern::Relation ContentSettingsPattern::Compare(
     const ContentSettingsPattern& other) const {
   // Two invalid patterns are identical in the way they behave. They don't match
@@ skipping 164 matching lines @@
   if (!parts.is_port_wildcard && other_parts.is_port_wildcard)
     return ContentSettingsPattern::PREDECESSOR;
 
   int result = parts.port.compare(other_parts.port);
   if (result == 0)
     return ContentSettingsPattern::IDENTITY;
   if (result > 0)
     return ContentSettingsPattern::DISJOINT_ORDER_PRE;
   return ContentSettingsPattern::DISJOINT_ORDER_POST;
 }