Delegating the "are images allowed" decision to renderer.

chrome/browser/content_settings/content_settings_provider.cc

Index: chrome/browser/content_settings/content_settings_provider.cc
diff --git a/chrome/browser/content_settings/content_settings_provider.cc b/chrome/browser/content_settings/content_settings_provider.cc
index 282c79885c22b29261ce63889714ef2993510914..c792f31ced054152bc5887553a52c591d586271b 100644
--- a/chrome/browser/content_settings/content_settings_provider.cc
+++ b/chrome/browser/content_settings/content_settings_provider.cc
@@ -18,4 +18,26 @@ ProviderInterface::Rule::Rule(const ContentSettingsPattern& primary_pattern,
       content_setting(setting) {
 }
 
+// static
+bool ProviderInterface::Rule::LexicographicalSort(
+    const ProviderInterface::Rule& a,
+    const ProviderInterface::Rule& b) {
+  if (a.primary_pattern.ToString() < b.primary_pattern.ToString())
+    return true;
+  if (b.primary_pattern.ToString() < a.primary_pattern.ToString())
+    return false;
+  return (a.secondary_pattern.ToString() < b.secondary_pattern.ToString());
+}
+
+// static
+bool ProviderInterface::Rule::PatternPrecedenceSort(
+    const ProviderInterface::Rule& a,
+    const ProviderInterface::Rule& b) {
+  if (a.primary_pattern < b.primary_pattern)
+    return true;
+  if (b.primary_pattern < a.primary_pattern)
+    return false;
+  return (a.secondary_pattern < b.secondary_pattern);
+}
+
 }  // namespace content_settings