Remove ability for users to launch ephemeral apps.

chrome/browser/ui/app_list/extension_app_model_builder.cc

 // Copyright (c) 2012 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/ui/app_list/extension_app_model_builder.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
@@ skipping 110 matching lines @@
     }
   }
 }
 
 void ExtensionAppModelBuilder::OnExtensionPreferenceChanged() {
   model_->NotifyExtensionPreferenceChanged();
 }
 
 void ExtensionAppModelBuilder::OnBeginExtensionInstall(
     const ExtensionInstallParams& params) {
-  if (!params.is_app || params.is_ephemeral)
+  if (!params.is_app)
     return;
 
   DVLOG(2) << service_ << ": OnBeginExtensionInstall: "
            << params.extension_id.substr(0, 8);
   ExtensionAppItem* existing_item = GetExtensionAppItem(params.extension_id);
   if (existing_item) {
     existing_item->SetIsInstalling(true);
     return;
   }
 
@@ skipping 184 matching lines @@
     app_list::AppListItem* item = item_list->item_at(idx + 1);
     if (item->GetItemType() == ExtensionAppItem::kItemType) {
       next = static_cast<ExtensionAppItem*>(item);
       break;
     }
   }
   // item->Move will call set_position, overriding the item's position.
   if (prev || next)
     static_cast<ExtensionAppItem*>(item)->Move(prev, next);
 }