Remove ability to launch ephemeral apps from the app launcher.

chrome/browser/apps/ephemeral_app_launcher.cc

 // 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.
 
 #include "chrome/browser/apps/ephemeral_app_launcher.h"
 
 #include "base/command_line.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_install_checker.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
@@ skipping 75 matching lines @@
     return false;
   }
 
   return true;
 }
 
 }  // namespace
 
 // static
 bool EphemeralAppLauncher::IsFeatureEnabled() {
-  return app_list::switches::IsExperimentalAppListEnabled();
-}
-
-// static
-bool EphemeralAppLauncher::IsFeatureEnabledInWebstore() {
-  return IsFeatureEnabled() &&
-         base::CommandLine::ForCurrentProcess()->HasSwitch(
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
              switches::kEnableEphemeralAppsInWebstore);
 }
 
 // static
 scoped_refptr<EphemeralAppLauncher> EphemeralAppLauncher::CreateForLauncher(
     const std::string& webstore_item_id,
     Profile* profile,
     gfx::NativeWindow parent_window,
     const LaunchCallback& callback) {
   scoped_refptr<EphemeralAppLauncher> installer =
@@ skipping 362 matching lines @@
 
   // CompleteInstall will call Release.
   WebstoreStandaloneInstaller::CompleteInstall(webstore_install::SUCCESS,
                                                std::string());
 }
 
 void EphemeralAppLauncher::ExtensionEnableFlowAborted(bool user_initiated) {
   // CompleteInstall will call Release.
   CompleteInstall(webstore_install::USER_CANCELLED, kUserCancelledError);
 }