Remove InstallTracker's extension load, unload observer

chrome/browser/extensions/install_tracker.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/install_tracker.h"
 
 #include "base/bind.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/install_tracker_factory.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 111 matching lines @@
           *content::Details<const std::string>(details).ptr());
       FOR_EACH_OBSERVER(InstallObserver, observers_,
                         OnAppInstalledToAppList(extension_id));
       break;
     }
     default:
       NOTREACHED();
   }
 }
 
-void InstallTracker::OnExtensionLoaded(content::BrowserContext* browser_context,
-                                       const Extension* extension) {
-  FOR_EACH_OBSERVER(InstallObserver, observers_, OnExtensionLoaded(extension));
-}
-
-void InstallTracker::OnExtensionUnloaded(
-    content::BrowserContext* browser_context,
-    const Extension* extension,
-    UnloadedExtensionInfo::Reason reason) {
-  FOR_EACH_OBSERVER(
-      InstallObserver, observers_, OnExtensionUnloaded(extension));
-}
-
 void InstallTracker::OnExtensionWillBeInstalled(
     content::BrowserContext* browser_context,
     const Extension* extension,
     bool is_update,
     bool from_ephemeral,
     const std::string& old_name) {
   FOR_EACH_OBSERVER(
       InstallObserver, observers_, OnExtensionInstalled(extension));
 }
 
 void InstallTracker::OnAppsReordered() {
   FOR_EACH_OBSERVER(InstallObserver, observers_, OnAppsReordered());
 }
 
 }  // namespace extensions