Fix crash when signing in to gaia from an incognito tab

chrome/browser/ui/sync/one_click_signin_helper_unittest.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 "base/command_line.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/content_settings/cookie_settings.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_info_cache.h"
 #include "chrome/browser/profiles/profile_io_data.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/signin/signin_manager_fake.h"
 #include "chrome/browser/signin/signin_names_io_thread.h"
 #include "chrome/browser/sync/profile_sync_service_mock.h"
 #include "chrome/browser/sync/profile_sync_service_factory.h"
 #include "chrome/browser/sync/test_profile_sync_service.h"
 #include "chrome/browser/ui/sync/one_click_signin_helper.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_pref_service.h"
 #include "chrome/test/base/testing_profile.h"
 #include "chrome/test/base/testing_profile_manager.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/test/mock_render_process_host.h"
 #include "content/public/test/test_browser_thread.h"
 #include "content/public/test/test_renderer_host.h"
 #include "grit/generated_resources.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::_;
 using ::testing::Mock;
 using ::testing::Return;
 using ::testing::ReturnRef;
 using ::testing::Values;
@@ skipping 473 matching lines @@
   EXPECT_FALSE(OneClickSigninHelper::CanOffer(
       web_contents(), OneClickSigninHelper::CAN_OFFER_FOR_ALL,
       "user@gmail.com", &error_message_id));
   EXPECT_EQ(0, error_message_id);
   EXPECT_FALSE(OneClickSigninHelper::CanOffer(
       web_contents(), OneClickSigninHelper::CAN_OFFER_FOR_INTERSTITAL_ONLY,
       "", &error_message_id));
   EXPECT_EQ(0, error_message_id);
 }
 
+// Should not crash if a helper instance is not associated with an incognito
+// web contents.
+TEST_F(OneClickSigninHelperTest, ShowInfoBarUIThreadIncognito) {
+  CreateSigninManager(true, "");
+  OneClickSigninHelper* helper =
+      OneClickSigninHelper::FromWebContents(web_contents());
+  EXPECT_EQ(NULL, helper);
+
+  OneClickSigninHelper::ShowInfoBarUIThread("session_index", "email",
+                                            OneClickSigninHelper::AUTO_ACCEPT,
+                                            SyncPromoUI::SOURCE_UNKNOWN,
+                                            process()->GetID(),
+                                            rvh()->GetRoutingID());
+}
+
 // I/O thread tests
 
 TEST_F(OneClickSigninHelperIOTest, CanOfferOnIOThread) {
   scoped_ptr<TestProfileIOData> io_data(CreateTestProfileIOData(false));
   EXPECT_EQ(OneClickSigninHelper::CAN_OFFER,
             OneClickSigninHelper::CanOfferOnIOThreadImpl(
                 valid_gaia_url_, "", &request_, io_data.get()));
 }
 
 TEST_F(OneClickSigninHelperIOTest, CanOfferOnIOThreadIncognito) {
@@ skipping 106 matching lines @@
                 valid_gaia_url_, "", &request_, io_data.get()));
 }
 
 TEST_F(OneClickSigninHelperIOTest, CanOfferOnIOThreadNoSigninCookies) {
   AllowSigninCookies(false);
   scoped_ptr<TestProfileIOData> io_data(CreateTestProfileIOData(false));
   EXPECT_EQ(OneClickSigninHelper::DONT_OFFER,
             OneClickSigninHelper::CanOfferOnIOThreadImpl(
                 valid_gaia_url_, "", &request_, io_data.get()));
 }