Remove ability for users to launch ephemeral apps.

chrome/browser/extensions/crx_installer.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/extensions/crx_installer.h"
 
 #include <map>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 139 matching lines @@
     expected_manifest_check_level_ = approval->manifest_check_level;
     if (expected_manifest_check_level_ !=
         WebstoreInstaller::MANIFEST_CHECK_LEVEL_NONE)
       expected_manifest_.reset(approval->manifest->DeepCopy());
     expected_id_ = approval->extension_id;
   }
   if (approval->minimum_version.get())
     minimum_version_ = base::Version(*approval->minimum_version);
 
   show_dialog_callback_ = approval->show_dialog_callback;
-  set_is_ephemeral(approval->is_ephemeral);
 }
 
 CrxInstaller::~CrxInstaller() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   // Ensure |client_| and |install_checker_| data members are destroyed on the
   // UI thread. The |client_| dialog has a weak reference as |this| is its
   // delegate, and |install_checker_| owns WeakPtrs, so must be destroyed on the
   // same thread that created it.
 }
 
@@ skipping 730 matching lines @@
   if (!prefs->DidExtensionEscalatePermissions(extension()->id()))
     return;
 
   if (client_) {
     AddRef();  // Balanced in InstallUIProceed() and InstallUIAbort().
     client_->ConfirmReEnable(this, extension());
   }
 }
 
 }  // namespace extensions