Notify users about certain changes in installed extensions.

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 53bb982d1fe8d032ac5927aee306d379b69da930..9917d3be60f5a4e2418a9b3837154ec23b3eb282 100644
--- a/chrome/browser/extensions/extension_prefs.cc
+++ b/chrome/browser/extensions/extension_prefs.cc
@@ -42,9 +42,14 @@ const char kPrefManifest[] = "manifest";
 // The version number.
 const char kPrefVersion[] = "manifest.version";
 
-// Indicates if an extension is blacklisted:
+// Indicates whether an extension is blacklisted.
 const char kPrefBlacklist[] = "blacklist";
 
+// Indicates whether the user has acknowledged various types of extensions.
+const char kPrefExternalAcknowledged[] = "ack_external";
+const char kPrefBlacklistAcknowledged[] = "ack_blacklist";
+const char kPrefOrphanAcknowledged[] = "ack_orphan";
+
 // Indicates whether to show an install warning when the user enables.
 const char kExtensionDidEscalatePermissions[] = "install_warning_on_enable";
 
@@ -524,6 +529,57 @@ bool ExtensionPrefs::IsExtensionBlacklisted(const std::string& extension_id) {
   return ReadExtensionPrefBoolean(extension_id, kPrefBlacklist);
 }
 
+bool ExtensionPrefs::IsExtensionOrphaned(const std::string& extension_id) {
+  // TODO(miket): we believe that this test will hinge on the number of
+  // consecutive times that an update check has returned a certain response
+  // versus a success response. For now nobody is orphaned.
+  return false;
+}
+
+bool ExtensionPrefs::IsExternalExtensionAcknowledged(
+    const std::string& extension_id) {
+  return ReadExtensionPrefBoolean(extension_id, kPrefExternalAcknowledged);
+}
+
+void ExtensionPrefs::AcknowledgeExternalExtension(
+    const std::string& extension_id) {
+  DCHECK(Extension::IdIsValid(extension_id));
+  UpdateExtensionPref(extension_id, kPrefExternalAcknowledged,
+                      Value::CreateBooleanValue(true));
+}
+
+bool ExtensionPrefs::IsBlacklistedExtensionAcknowledged(
+    const std::string& extension_id) {
+  return ReadExtensionPrefBoolean(extension_id, kPrefBlacklistAcknowledged);
+}
+
+void ExtensionPrefs::AcknowledgeBlacklistedExtension(
+    const std::string& extension_id) {
+  DCHECK(Extension::IdIsValid(extension_id));
+  UpdateExtensionPref(extension_id, kPrefBlacklistAcknowledged,
+                      Value::CreateBooleanValue(true));
+}
+
+bool ExtensionPrefs::IsOrphanedExtensionAcknowledged(
+    const std::string& extension_id) {
+  return ReadExtensionPrefBoolean(extension_id, kPrefOrphanAcknowledged);
+}
+
+void ExtensionPrefs::AcknowledgeOrphanedExtension(
+    const std::string& extension_id) {
+  DCHECK(Extension::IdIsValid(extension_id));
+  UpdateExtensionPref(extension_id, kPrefOrphanAcknowledged,
+                      Value::CreateBooleanValue(true));
+}
+
+bool ExtensionPrefs::IsNotificationSystemInitialized() {
+  if (prefs_->GetBoolean(prefs::kExtensionNotificationsInitializedPref)) {
+    return true;
+  }
+  prefs_->SetBoolean(prefs::kExtensionNotificationsInitializedPref, true);
+  return false;
+}
+
 bool ExtensionPrefs::IsExtensionAllowedByPolicy(
     const std::string& extension_id) {
   std::string string_value;