Enable/disable extensions upon changes in blacklist.

chrome/browser/extensions/extension_prefs.cc

Index: chrome/browser/extensions/extension_prefs.cc
diff --git a/chrome/browser/extensions/extension_prefs.cc b/chrome/browser/extensions/extension_prefs.cc
index 9f416a0ba0e99006e0c5af8c8b1d0c920ae36769..bacaefabe9ce823910c447dad60529309d5b9dd5 100644
--- a/chrome/browser/extensions/extension_prefs.cc
+++ b/chrome/browser/extensions/extension_prefs.cc
@@ -67,6 +67,9 @@ const char kPrefVersion[] = "manifest.version";
 // Indicates whether an extension is blacklisted.
 const char kPrefBlacklist[] = "blacklist";
 
+// If extension is greylisted.
+const char kPrefGreylist[] = "greylist";
+
 // The count of how many times we prompted the user to acknowledge an
 // extension.
 const char kPrefAcknowledgePromptCount[] = "ack_prompt_count";
@@ -1147,6 +1150,19 @@ void ExtensionPrefs::SetExtensionState(const std::string& extension_id,
   content_settings_store_->SetExtensionState(extension_id, enabled);
 }
 
+void ExtensionPrefs::SetExtensionGreylisted(const std::string& extension_id,
+                                            bool state) {
+  UpdateExtensionPref(extension_id, kPrefGreylist,
+                      new base::FundamentalValue(state));
+}
+
+bool ExtensionPrefs::IsExtensionGreylisted(const std::string& extension_id) {
+  const base::DictionaryValue* ext_prefs = GetExtensionPref(extension_id);
+  bool bool_value;
+  return ext_prefs && ext_prefs->GetBoolean(kPrefGreylist, &bool_value)
+                   && bool_value;
+}
+
 std::string ExtensionPrefs::GetVersionString(const std::string& extension_id) {
   const base::DictionaryValue* extension = GetExtensionPref(extension_id);
   if (!extension)