[Extensions] Remove FeatureSwitch::easy_off_store_install

chrome/browser/ui/webui/extensions/install_extension_handler.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/webui/extensions/install_extension_handler.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/strings/string_util.h"
@@ skipping 20 matching lines @@
 }
 
 InstallExtensionHandler::~InstallExtensionHandler() {
 }
 
 void InstallExtensionHandler::GetLocalizedValues(
     content::WebUIDataSource* source) {
   source->AddString(
       "extensionSettingsInstallDropTarget",
       l10n_util::GetStringUTF16(IDS_EXTENSIONS_INSTALL_DROP_TARGET));
-  source->AddBoolean(
-      "offStoreInstallEnabled",
-      FeatureSwitch::easy_off_store_install()->IsEnabled());
 }
 
 void InstallExtensionHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback(
       "startDrag",
       base::Bind(&InstallExtensionHandler::HandleStartDragMessage,
                  base::Unretained(this)));
   web_ui()->RegisterMessageCallback(
       "stopDrag",
       base::Bind(&InstallExtensionHandler::HandleStopDragMessage,
@@ skipping 77 matching lines @@
 void InstallExtensionHandler::HandleInstallDirectoryMessage(
     const base::ListValue* args) {
   Profile* profile = Profile::FromBrowserContext(
       web_ui()->GetWebContents()->GetBrowserContext());
   UnpackedInstaller::Create(
       ExtensionSystem::Get(profile)->
           extension_service())->Load(file_to_install_);
 }
 
 }  // namespace extensions