Delegating the "are images allowed" decision to renderer.

chrome/common/content_settings.cc

Index: chrome/common/content_settings.cc
diff --git a/chrome/common/content_settings.cc b/chrome/common/content_settings.cc
index 89eaa591f102f9eacbba434582d162799da6d31c..9338ba39e8e22a8bee1fa1e762d406ec73d19015 100644
--- a/chrome/common/content_settings.cc
+++ b/chrome/common/content_settings.cc
@@ -9,3 +9,27 @@ ContentSetting IntToContentSetting(int content_setting) {
           (content_setting >= CONTENT_SETTING_NUM_SETTINGS)) ?
       CONTENT_SETTING_DEFAULT : static_cast<ContentSetting>(content_setting);
 }
+
+ContentSettings::ContentSettings() {
+  for (int i = 0; i < CONTENT_SETTINGS_NUM_TYPES; ++i)
+    settings[i] = CONTENT_SETTING_DEFAULT;
+}
+
+ContentSettings::ContentSettings(ContentSetting default_setting) {
+  for (int i = 0; i < CONTENT_SETTINGS_NUM_TYPES; ++i)
+    settings[i] = default_setting;
+}
+
+ContentSettingPatternSource::ContentSettingPatternSource(
+    const ContentSettingsPattern& primary_pattern,
+    const ContentSettingsPattern& secondary_pattern,
+    ContentSetting setting,
+    const std::string& source,
+    bool incognito)
+    : primary_pattern(primary_pattern),
+      secondary_pattern(secondary_pattern),
+      setting(setting),
+      source(source),
+      incognito(incognito) {}
+
+ContentSettingPatternSource::ContentSettingPatternSource() {}