Remove NOTIFICATION_EXTENSION_UNINSTALLED from extension_enable_flow.*

chrome/browser/ui/extensions/extension_enable_flow.cc

Index: chrome/browser/ui/extensions/extension_enable_flow.cc
diff --git a/chrome/browser/ui/extensions/extension_enable_flow.cc b/chrome/browser/ui/extensions/extension_enable_flow.cc
index 8b232873493deff02866eae3369cefd29854d098..be3454a04f4c0f9beab76a102f55bb32bcb817ca 100644
--- a/chrome/browser/ui/extensions/extension_enable_flow.cc
+++ b/chrome/browser/ui/extensions/extension_enable_flow.cc
@@ -116,36 +116,19 @@ void ExtensionEnableFlow::StartObserving() {
       extensions::ExtensionRegistry::Get(profile_));
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOAD_ERROR,
                  content::Source<Profile>(profile_));
-  registrar_.Add(this,
-                 chrome::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED,
-                 content::Source<Profile>(profile_));
 }
 
 void ExtensionEnableFlow::StopObserving() {
   registrar_.RemoveAll();
+  extension_registry_observer_.RemoveAll();

[limasdf, 2014/06/03 19:27:43]

I think this is necessary. and it should be addressed from my previous
commit(https://codereview.chromium.org/251603004/)

 }
 
 void ExtensionEnableFlow::Observe(int type,
                                   const content::NotificationSource& source,
                                   const content::NotificationDetails& details) {
-  switch (type) {
-    case chrome::NOTIFICATION_EXTENSION_LOAD_ERROR: {
-      StopObserving();
-      delegate_->ExtensionEnableFlowAborted(false);
-      break;
-    }
-    case chrome::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED: {
-      const Extension* extension =
-          content::Details<const Extension>(details).ptr();
-      if (extension->id() == extension_id_) {
-        StopObserving();
-        delegate_->ExtensionEnableFlowAborted(false);
-      }
-      break;
-    }
-    default:
-      NOTREACHED();
-  }
+  DCHECK_EQ(chrome::NOTIFICATION_EXTENSION_LOAD_ERROR, type);
+  StopObserving();
+  delegate_->ExtensionEnableFlowAborted(false);
 }
 
 void ExtensionEnableFlow::OnExtensionLoaded(
@@ -157,6 +140,15 @@ void ExtensionEnableFlow::OnExtensionLoaded(
   }
 }
 
+void ExtensionEnableFlow::OnExtensionUninstalled(
+    content::BrowserContext* browser_context,
+    const Extension* extension) {
+  if (extension->id() == extension_id_) {
+    StopObserving();
+    delegate_->ExtensionEnableFlowAborted(false);
+  }
+}
+
 void ExtensionEnableFlow::InstallUIProceed() {
   ExtensionService* service =
       extensions::ExtensionSystem::Get(profile_)->extension_service();