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

chrome/common/content_settings_pattern.h

 // 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.
 
 // Patterns used in content setting rules.
 
 #ifndef CHROME_COMMON_CONTENT_SETTINGS_PATTERN_H_
 #define CHROME_COMMON_CONTENT_SETTINGS_PATTERN_H_
 #pragma once
 
@@ skipping 159 matching lines @@
   // Serializes the pattern to an IPC message or deserializes it.
   void WriteToMessage(IPC::Message* m) const;
   bool ReadFromMessage(const IPC::Message* m, PickleIterator* iter);
 
   // True if this is a valid pattern.
   bool IsValid() const { return is_valid_; }
 
   // True if |url| matches this pattern.
   bool Matches(const GURL& url) const;
 
+  // True if this pattern matches all hosts (i.e. it has a host wildcard).
+  bool MatchesAllHosts() const;
+
   // Returns a std::string representation of this pattern.
   const std::string ToString() const;
 
   // Compares the pattern with a given |other| pattern and returns the
   // |Relation| of the two patterns.
   Relation Compare(const ContentSettingsPattern& other) const;
 
   // Returns true if the pattern and the |other| pattern are identical.
   bool operator==(const ContentSettingsPattern& other) const;
 
@@ skipping 79 matching lines @@
 };
 
 // Stream operator so ContentSettingsPattern can be used in assertion
 // statements.
 inline std::ostream& operator<<(
     std::ostream& out, const ContentSettingsPattern& pattern) {
   return out << pattern.ToString();
 }
 
 #endif  // CHROME_COMMON_CONTENT_SETTINGS_PATTERN_H_