Make sideloaded (externally installed) extensions display webstore info

chrome/browser/extensions/webstore_standalone_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/webstore_standalone_installer.h"
 
 #include "base/values.h"
 #include "chrome/browser/extensions/crx_installer.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
 #include "chrome/browser/extensions/extension_install_ui.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/webstore_data_fetcher.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/common/extension.h"
 #include "url/gurl.h"
 
 using content::WebContents;
 
 namespace extensions {
 
-const char kManifestKey[] = "manifest";
-const char kIconUrlKey[] = "icon_url";
-const char kLocalizedNameKey[] = "localized_name";
-const char kLocalizedDescriptionKey[] = "localized_description";
-const char kUsersKey[] = "users";
-const char kShowUserCountKey[] = "show_user_count";
-const char kAverageRatingKey[] = "average_rating";
-const char kRatingCountKey[] = "rating_count";
-
 const char kInvalidWebstoreItemId[] = "Invalid Chrome Web Store item ID";
 const char kWebstoreRequestError[] =
     "Could not fetch data from the Chrome Web Store";
 const char kInvalidWebstoreResponseError[] = "Invalid Chrome Web Store reponse";
 const char kInvalidManifestError[] = "Invalid manifest";
 const char kUserCancelledError[] = "User cancelled install";
 const char kExtensionIsBlacklisted[] = "Extension is blacklisted";
 
 WebstoreStandaloneInstaller::WebstoreStandaloneInstaller(
     const std::string& webstore_item_id,
@@ skipping 287 matching lines @@
   // Balanced in InstallUIAbort or indirectly in InstallUIProceed via
   // OnExtensionInstallSuccess or OnExtensionInstallFailure.
   AddRef();
 
   install_ui_ = CreateInstallUI();
   install_ui_->ConfirmStandaloneInstall(
       this, localized_extension_for_display_.get(), &icon_, *install_prompt_);
 }
 
 }  // namespace extensions