Remove ability for users to launch ephemeral apps.

chrome/browser/extensions/install_observer.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_INSTALL_OBSERVER_H_
 #define CHROME_BROWSER_EXTENSIONS_INSTALL_OBSERVER_H_
 
 #include <string>
 
 #include "ui/gfx/image/image_skia.h"
@@ skipping 10 matching lines @@
         std::string extension_name,
         gfx::ImageSkia installing_icon,
         bool is_app,
         bool is_platform_app);
 
     std::string extension_id;
     std::string extension_name;
     gfx::ImageSkia installing_icon;
     bool is_app;
     bool is_platform_app;
-    bool is_ephemeral;
   };
 
   // Called at the beginning of the complete installation process, i.e., this
   // is called before the extension download begins.
   virtual void OnBeginExtensionInstall(const ExtensionInstallParams& params) {}
 
   // Called when the Extension begins the download process. This typically
   // happens right after OnBeginExtensionInstall(), unless the extension has
   // already been downloaded.
   virtual void OnBeginExtensionDownload(const std::string& extension_id) {}
@@ skipping 27 matching lines @@
   // Notifies observers that the observed object is going away.
   virtual void OnShutdown() {}
 
  protected:
   virtual ~InstallObserver() {}
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_INSTALL_OBSERVER_H_