Fix use-after-free in WebstoreInstaller

chrome/browser/extensions/api/webstore_private/webstore_private_api.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/api/webstore_private/webstore_private_api.h"
 
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_vector.h"
@@ skipping 222 matching lines @@
     item.manifest = params.details[i]->manifest;
     item.localized_name = params.details[i]->localized_name;
     items->push_back(item);
   }
 
   return true;
 }
 
 void WebstorePrivateInstallBundleFunction::OnBundleInstallApproved() {
   bundle_->CompleteInstall(
-      &(dispatcher()->delegate()->GetAssociatedWebContents()->GetController()),
+      dispatcher()->delegate()->GetAssociatedWebContents(),
       this);
 }
 
 void WebstorePrivateInstallBundleFunction::OnBundleInstallCanceled(
     bool user_initiated) {
   if (user_initiated)
     error_ = "user_canceled";
   else
     error_ = "unknown_error";
 
@@ skipping 309 matching lines @@
       app_list_service->CreateForProfile(GetProfile());
     else
       app_list_service->ShowForProfile(GetProfile());
   }
 
   // The extension will install through the normal extension install flow, but
   // the whitelist entry will bypass the normal permissions install dialog.
   scoped_refptr<WebstoreInstaller> installer = new WebstoreInstaller(
       GetProfile(),
       this,
-      &(dispatcher()->delegate()->GetAssociatedWebContents()->GetController()),
+      dispatcher()->delegate()->GetAssociatedWebContents(),
       params->expected_id,
       approval_.Pass(),
       WebstoreInstaller::INSTALL_SOURCE_OTHER);
   installer->Start();
 
   return true;
 }
 
 void WebstorePrivateCompleteInstallFunction::OnExtensionInstallSuccess(
     const std::string& id) {
@@ skipping 94 matching lines @@
   return true;
 }
 
 bool WebstorePrivateIsInIncognitoModeFunction::RunImpl() {
   results_ = IsInIncognitoMode::Results::Create(
       GetProfile() != GetProfile()->GetOriginalProfile());
   return true;
 }
 
 }  // namespace extensions