Make InstallTracker use more appropriate names for events.

BUG=247555

Review URL: https://chromiumcodereview.appspot.com/18226006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@211328 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/install_tracker.cc b/chrome/browser/extensions/install_tracker.cc
index 784c97c..ea0e6aa 100644
--- a/chrome/browser/extensions/install_tracker.cc
+++ b/chrome/browser/extensions/install_tracker.cc
@@ -16,6 +16,8 @@
                                extensions::ExtensionPrefs* prefs) {
   ExtensionSorting* sorting = prefs->extension_sorting();
 
+  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_INSTALLED,
+      content::Source<Profile>(profile));
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED,
       content::Source<Profile>(profile));
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
@@ -78,24 +80,26 @@
                              const content::NotificationSource& source,
                              const content::NotificationDetails& details) {
   switch (type) {
-    case chrome::NOTIFICATION_EXTENSION_LOADED: {
+    case chrome::NOTIFICATION_EXTENSION_INSTALLED: {
       const Extension* extension =
           content::Details<const Extension>(details).ptr();
       FOR_EACH_OBSERVER(InstallObserver, observers_,
                         OnExtensionInstalled(extension));
       break;
     }
+    case chrome::NOTIFICATION_EXTENSION_LOADED: {
+      const Extension* extension =
+          content::Details<const Extension>(details).ptr();
+      FOR_EACH_OBSERVER(InstallObserver, observers_,
+                        OnExtensionLoaded(extension));
+      break;
+    }
     case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
       const content::Details<extensions::UnloadedExtensionInfo>& unload_info(
           details);
       const Extension* extension = unload_info->extension;
-      if (unload_info->reason == extension_misc::UNLOAD_REASON_UNINSTALL) {
-        FOR_EACH_OBSERVER(InstallObserver, observers_,
-                          OnExtensionUninstalled(extension));
-      } else {
-        FOR_EACH_OBSERVER(InstallObserver, observers_,
-                          OnExtensionDisabled(extension));
-      }
+      FOR_EACH_OBSERVER(InstallObserver, observers_,
+                        OnExtensionUnloaded(extension));
       break;
     }
     case chrome::NOTIFICATION_EXTENSION_UNINSTALLED: {