Unload old Cast extensions after initializing ToolbarActionsModel

chrome/browser/ui/toolbar/toolbar_actions_model.cc

Index: chrome/browser/ui/toolbar/toolbar_actions_model.cc
diff --git a/chrome/browser/ui/toolbar/toolbar_actions_model.cc b/chrome/browser/ui/toolbar/toolbar_actions_model.cc
index 3117eaa67c2c88ca91d7c76ab6e3ed3d5af55dec..c508e3da00a90f4a52797388a3cff33a51493c33 100644
--- a/chrome/browser/ui/toolbar/toolbar_actions_model.cc
+++ b/chrome/browser/ui/toolbar/toolbar_actions_model.cc
@@ -268,6 +268,12 @@ void ToolbarActionsModel::OnReady() {
   actions_initialized_ = true;
   for (Observer& observer : observers_)
     observer.OnToolbarModelInitialized();
+
+  if (use_redesign_) {

[mark a. foltz, 2017/02/14 23:16:09]

Is it still possible to turn the extension action redesign off?  I suppose so if
this flag is still present.

[Devlin, 2017/02/14 23:18:49]

I'm slowly working on removing them all; I'll get to this one soon. :)

+    ComponentToolbarActionsFactory::GetInstance()->UnloadMigratedExtensions(
+        extensions::ExtensionSystem::Get(profile_)->extension_service(),
+        extension_registry_);
+  }
 }
 
 size_t ToolbarActionsModel::FindNewPositionFromLastKnownGood(