Delegating the "are images allowed" decision to renderer.

chrome/common/content_settings_pattern.h

 // 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.
 
 // Patterns used in content setting rules.
 
 #ifndef CHROME_COMMON_CONTENT_SETTINGS_PATTERN_H_
 #define CHROME_COMMON_CONTENT_SETTINGS_PATTERN_H_
 #pragma once
 
@@ skipping 127 matching lines @@
 
   // Returns true if the pattern and the |other| pattern are not identical.
   bool operator!=(const ContentSettingsPattern& other) const;
 
   // Returns true if the pattern has a lower priority than the |other| pattern.
   bool operator<(const ContentSettingsPattern& other) const;
 
   // Returns true if the pattern has a higher priority than the |other| pattern.
   bool operator>(const ContentSettingsPattern& other) const;
 
- private:
-  friend class content_settings::PatternParser;
-  friend class ContentSettingsPatternParserTest_SerializePatterns_Test;
-  friend class Builder;
-
+  // Public for serializing and sending |ContentSettingsPattern| over IPC.
   struct PatternParts {
     PatternParts();
     ~PatternParts();
 
     // Lowercase string of the URL scheme to match. This string is empty if the
     // |is_scheme_wildcard| flag is set.
     std::string scheme;
 
     // True if the scheme wildcard is set.
     bool is_scheme_wildcard;
@@ skipping 13 matching lines @@
     std::string port;
 
     // True if the port wildcard is set.
     bool is_port_wildcard;
 
     // TODO(markusheintz): Needed for legacy reasons. Remove. Path
     // specification. Only used for content settings pattern with a "file"
     // scheme part.
     std::string path;
   };
+  PatternParts parts_;
+  bool is_valid_;
+
+ private:
+  friend class content_settings::PatternParser;
+  friend class ContentSettingsPatternParserTest_SerializePatterns_Test;
+  friend class Builder;
 
   class Builder : public BuilderInterface {
     public:
      explicit Builder(bool use_legacy_validate);
      virtual ~Builder();
 
      // Overrides BuilderInterface
      virtual BuilderInterface* WithPort(const std::string& port);
 
      virtual BuilderInterface* WithPortWildcard();
@@ skipping 38 matching lines @@
       const ContentSettingsPattern::PatternParts& parts,
       const ContentSettingsPattern::PatternParts& other_parts);
 
   static Relation ComparePort(
       const ContentSettingsPattern::PatternParts& parts,
       const ContentSettingsPattern::PatternParts& other_parts);
 
   static bool Validate(const PatternParts& parts);
 
   ContentSettingsPattern(const PatternParts& parts, bool valid);
-
-  PatternParts parts_;
-
-  bool is_valid_;
 };
 
 // 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_