Add link URL and success/failure callback parameters to chrome.webstore.install()

chrome/renderer/extensions/chrome_webstore_bindings.h

 // Copyright (c) 2011 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.
 
 // The ChromeStoreExtension is a V8 extension that creates an object at
 // window.chrome.webstore.  This object allows JavaScript to initiate inline
 // installs of apps that are listed in the Chrome Web Store (CWS).
 
 #ifndef CHROME_RENDERER_EXTENSIONS_CHROME_WEBSTORE_BINDINGS_H_
 #define CHROME_RENDERER_EXTENSIONS_CHROME_WEBSTORE_BINDINGS_H_
 #pragma once
 
+#include <string>
+
 namespace v8 {
 class Extension;
 }
 
-namespace extensions_v8 {
-
 class ChromeWebstoreExtension {
  public:
   static v8::Extension* Get();
+
+  static void HandleInstallResponse(int install_id,
+                                    bool success,
+                                    const std::string& error);
 };
 
-}  // namespace extensions_v8
-
 #endif  // CHROME_RENDERER_EXTENSIONS_CHROME_WEBSTORE_BINDINGS_H_