[Extensions] Migrate ExtensionInstallPrompt::Delegate to be a callback

chrome/browser/extensions/webstore_reinstaller.cc

 // Copyright 2014 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_reinstaller.h"
 
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 68 matching lines @@
     std::string* error) const {
   return true;
 }
 
 void WebstoreReinstaller::WebContentsDestroyed() {
   // Run the callback now, because AbortInstall() doesn't do it.
   RunCallback(false, kTabClosed, webstore_install::ABORTED);
   AbortInstall();
 }
 
-void WebstoreReinstaller::InstallUIProceed() {
+void WebstoreReinstaller::OnInstallPromptDone(
+    ExtensionInstallPrompt::Result result) {
+  if (result != ExtensionInstallPrompt::Result::ACCEPTED) {
+    WebstoreStandaloneInstaller::OnInstallPromptDone(result);
+    return;
+  }
+
   if (!ExtensionSystem::Get(profile())->extension_service()->UninstallExtension(
           id(),
           UNINSTALL_REASON_REINSTALL,
           base::Bind(&WebstoreReinstaller::OnDeletionDone, this),
           NULL)) {
     // Run the callback now, because AbortInstall() doesn't do it.
     RunCallback(
         false, kCouldNotUninstallExtension, webstore_install::OTHER_ERROR);
     AbortInstall();
   }
 }
 
 void WebstoreReinstaller::OnDeletionDone() {
-  WebstoreStandaloneInstaller::InstallUIProceed();
+  WebstoreStandaloneInstaller::OnInstallPromptDone(
+      ExtensionInstallPrompt::Result::ACCEPTED);
 }
 
 }  // namespace extensions