Extensions: Fix a crash installing an app w/ oauth2 scopes in incognito.

chrome/browser/extensions/extension_install_prompt.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/extension_install_prompt.h"
 
 #include <map>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 476 matching lines @@
     return;
   }
 
   const Extension::OAuth2Info& oauth2_info = extension_->oauth2_info();
   if (oauth2_info.client_id.empty() ||
       oauth2_info.scopes.empty()) {
     ShowConfirmation();
     return;
   }
 
-  Profile* profile = install_ui_->profile();
+  Profile* profile = install_ui_->profile()->GetOriginalProfile();
   TokenService* token_service = TokenServiceFactory::GetForProfile(profile);
 
   token_flow_.reset(new OAuth2MintTokenFlow(
       profile->GetRequestContext(),
       this,
       OAuth2MintTokenFlow::Parameters(
           token_service->GetOAuth2LoginRefreshToken(),
           extension_->id(),
           oauth2_info.client_id,
           oauth2_info.scopes,
@@ skipping 49 matching lines @@
     Browser* browser) {
   // |browser| can be NULL in unit tests.
   if (!browser)
     return new ExtensionInstallPrompt(NULL, NULL, NULL);
   gfx::NativeWindow parent =
       browser->window() ? browser->window()->GetNativeWindow() : NULL;
   return new ExtensionInstallPrompt(parent, browser, browser->profile());
 }
 
 }  // namespace chrome